Delbert Bernard Unser
Positions: Centerfielder and First Baseman
Bats: Left, Throws: Left
Height: 6' 1", Weight: 180 lb.
Born: December 9, 1944 in Decatur, IL
School: Mississippi State University (Mississippi State, MS)
Drafted by the Washington Senators in the 1st round (18th pick) of the 1966 amateur draft (June Secondary). Player signed June 28, 1966.
(All Transactions)
Debut: April 10, 1968 (Age 23)
vs. MIN 4 AB, 1 H, 0 HR, 0 RBI, 0 SB
Teams (by GP): Senators/Phillies/Expos/Mets/Indians 1968-1982
Agents: Dick Moss [*]
Final Game: June 6, 1982 (Age 37)
vs. HOU 1 AB, 0 H, 0 HR, 0 RBI, 0 SB
Relatives: Son of Al Unser
About biographical information
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| 1968 HRs | #car | #yr | #gm | Date | @Bat | Pitcher | Score | Inn | Out | RoB | RBI | BOP | Pos | WPA | bWE | Notes | Play Description | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 1 | 1 | 1968-08-20 (1) | WSA | @ | OAK | Jim Nash | tied 0-0 | t 1 | 0 | --- | 1 | 1 | 8 | 0.123 | 62% | Lead-Off | Home Run |
| 1969 HRs | #car | #yr | #gm | Date | @Bat | Pitcher | Score | Inn | Out | RoB | RBI | BOP | Pos | WPA | bWE | Notes | Play Description | ||
| 2 | 2 | 1 | 1 | 1969-06-03 | WSA | @ | KCR | Wally Bunker | behind 2-5 | t 8 | 0 | --- | 1 | 1 | 8 | 0.061 | 12% | Home Run | |
| 3 | 3 | 2 | 1 | 1969-06-08 | WSA | @ | MIN | Tom Hall | tied 5-5 | t 12 | 1 | 1-- | 2 | 1 | 8 | 0.422 | 92% | Home Run; Casanova Scores | |
| 4 | 4 | 3 | 1 | 1969-06-25 | WSA | @ | BAL | Dave Leonhard | ahead 7-6 | t 7 | 2 | 1-3 | 3 | 6 | 8 | 0.234 | 94% | Home Run; Allen Scores; Howard Scores | |
| 5 | 5 | 4 | 1 | 1969-06-29 (2) | WSA | BOS | Bill Lee | ahead 9-4 | b 6 | 0 | --- | 1 | 1 | 8 | 0.010 | 99% | Home Run (Deep CF-RF) | ||
| 6 | 6 | 5 | 1 | 1969-09-07 | WSA | @ | BOS | Jim Lonborg | tied 2-2 | t 10 | 2 | --- | 1 | 9 | PH | 0.416 | 81% | Home Run | |
| 7 | 7 | 6 | 1 | 1969-09-25 | WSA | @ | DET | Mike Kilkenny | ahead 3-0 | t 4 | 0 | --- | 1 | 6 | 8 | 0.062 | 89% | Home Run | |
| 8 | 8 | 7 | 1 | 1969-09-28 | WSA | CLE | Stan Williams | tied 6-6 | b 10 | 1 | --- | 1 | 7 | 8 | 0.431 | 100% | Walk-Off | Home Run | |
| 1970 HRs | #car | #yr | #gm | Date | @Bat | Pitcher | Score | Inn | Out | RoB | RBI | BOP | Pos | WPA | bWE | Notes | Play Description | ||
| 9 | 9 | 1 | 1 | 1970-05-27 | WSA | @ | BOS | Ray Culp | tied 0-0 | t 1 | 0 | --- | 1 | 1 | 8 | 0.098 | 60% | Lead-Off | Home Run (Deep RF) |
| 10 | 10 | 2 | 1 | 1970-06-10 | WSA | @ | KCR | Wally Bunker | ahead 4-0 | t 5 | 0 | --- | 1 | 7 | 8 | 0.037 | 95% | Home Run (Deep RF) | |
| 11 | 11 | 3 | 1 | 1970-06-13 | WSA | @ | CHW | Floyd Weaver | ahead 10-7 | t 8 | 0 | --- | 1 | 1 | 8 | 0.032 | 97% | Home Run (Deep RF) | |
| 12 | 12 | 4 | 1 | 1970-07-05 (2) | WSA | @ | NYY | Gary Waslewski | tied 0-0 | t 1 | 0 | 1-- | 2 | 2 | 7 | 0.167 | 70% | Home Run; Stroud Scores | |
| 13 | 13 | 5 | 1 | 1970-08-23 | WSA | @ | MIN | Pete Hamm | ahead 6-0 | t 6 | 1 | 12- | 3 | 2 | 9 | 0.016 | 100% | Home Run; Bosman Scores; Stroud Scores | |
| 1971 HRs | #car | #yr | #gm | Date | @Bat | Pitcher | Score | Inn | Out | RoB | RBI | BOP | Pos | WPA | bWE | Notes | Play Description | ||
| 14 | 14 | 1 | 1 | 1971-04-21 | WSA | @ | NYY | Mel Stottlemyre | tied 5-5 | t 6 | 2 | --- | 1 | 1 | 8 | 0.205 | 65% | Home Run | |
| 15 | 15 | 2 | 1 | 1971-05-09 | WSA | @ | MIN | Jim Perry | tied 0-0 | t 1 | 0 | --- | 1 | 1 | 8 | 0.106 | 61% | Lead-Off | Home Run |
| 16 | 16 | 3 | 1 | 1971-06-27 (1) | WSA | @ | NYY | Stan Bahnsen | behind 0-1 | t 3 | 1 | -2- | 2 | 1 | 8 | 0.217 | 61% | Home Run; Cullen Scores | |
| 17 | 17 | 4 | 1 | 1971-07-04 | WSA | @ | CLE | Steve Dunning | tied 2-2 | t 5 | 2 | 1-- | 2 | 1 | 8 | 0.269 | 74% | Home Run; Cullen Scores | |
| 18 | 18 | 5 | 1 | 1971-07-05 | WSA | @ | CLE | Phil Hennigan | ahead 11-3 | t 6 | 2 | 12- | 3 | 1 | 8 | 0.005 | 100% | Home Run; Cullen Scores; Lindblad Scores | |
| 19 | 19 | 6 | 1 | 1971-07-25 (1) | WSA | @ | CHW | Wilbur Wood | behind 0-4 | t 5 | 2 | --- | 1 | 7 | 9 | 0.047 | 11% | Home Run | |
| 20 | 20 | 7 | 1 | 1971-08-29 (1) | WSA | @ | OAK | Vida Blue | behind 0-3 | t 5 | 1 | --- | 1 | 1 | 9 | 0.078 | 20% | Home Run | |
| 21 | 21 | 8 | 1 | 1971-09-04 | WSA | BAL | Jim Palmer | behind 0-2 | b 1 | 0 | --- | 1 | 1 | 8 | 0.108 | 43% | Lead-Off | Home Run | |
| 22 | 22 | 9 | 1 | 1971-09-15 | WSA | @ | DET | Joe Coleman | behind 1-2 | t 5 | 1 | --- | 1 | 1 | 8 | 0.153 | 47% | Home Run | |
| 1972 HRs | #car | #yr | #gm | Date | @Bat | Pitcher | Score | Inn | Out | RoB | RBI | BOP | Pos | WPA | bWE | Notes | Play Description | ||
| 23 | 23 | 1 | 1 | 1972-05-09 | CLE | KCR | Paul Splittorff | tied 0-0 | b 8 | 2 | 1-- | 2 | 1 | 8 | 0.399 | 94% | Home Run; Tidrow Scores | ||
| 1973 HRs | #car | #yr | #gm | Date | @Bat | Pitcher | Score | Inn | Out | RoB | RBI | BOP | Pos | WPA | bWE | Notes | Play Description | ||
| 24 | 24 | 1 | 1 | 1973-05-09 | PHI | CIN | Pedro Borbon | behind 6-7 | b 8 | 0 | --- | 1 | 9 | PH | 0.312 | 60% | Home Run | ||
| 25 | 25 | 2 | 1 | 1973-05-18 | PHI | CHC | Fergie Jenkins | behind 0-4 | b 3 | 2 | --- | 1 | 2 | 8 | 0.064 | 18% | Home Run | ||
| 26 | 26 | 3 | 1 | 1973-05-27 (1) | PHI | @ | SDP | Bill Greif | ahead 3-1 | t 5 | 1 | --- | 1 | 2 | 8 | 0.090 | 85% | Home Run | |
| 27 | 27 | 4 | 1 | 1973-06-22 | PHI | @ | MON | Mike Torrez | tied 0-0 | t 1 | 1 | --- | 1 | 2 | 8 | 0.104 | 58% | Home Run | |
| 28 | 28 | 5 | 1 | 1973-06-26 (1) | PHI | STL | Bob Gibson | ahead 5-3 | b 6 | 1 | 12- | 3 | 3 | 8 | 0.102 | 98% | Home Run; Anderson Scores; Doyle Scores | ||
| 29 | 29 | 6 | 1 | 1973-06-26 (2) | PHI | STL | Wayne Granger | behind 3-4 | b 9 | 2 | --- | 1 | 3 | 8 | 0.490 | 53% | Home Run | ||
| 30 | 30 | 7 | 1 | 1973-06-28 | PHI | @ | NYM | Jim McAndrew | tied 0-0 | t 1 | 1 | -2- | 2 | 3 | 8 | 0.165 | 68% | Home Run; Doyle Scores | |
| 31 | 31 | 8 | 1 | 1973-07-13 | PHI | HOU | Don Wilson | tied 1-1 | b 3 | 2 | 12- | 3 | 5 | 8 | 0.285 | 83% | Home Run; Montanez Scores; Luzinski Scores | ||
| 32 | 32 | 9 | 1 | 1973-07-26 (2) | PHI | MON | Mike Marshall | behind 0-5 | b 9 | 1 | --- | 1 | 6 | 8 | 0.004 | 1% | Home Run | ||
| 33 | 33 | 10 | 1 | 1973-09-09 | PHI | PIT | Nelson Briles | behind 1-7 | b 6 | 0 | 1-- | 2 | 2 | 8 | 0.047 | 9% | Home Run; Doyle Scores | ||
| 34 | 34 | 11 | 1 | 1973-09-27 | PHI | @ | PIT | Bruce Kison | tied 0-0 | t 1 | 0 | 1-- | 2 | 2 | 8 | 0.164 | 70% | Home Run; Grabarkewitz Scores | |
| 1974 HRs | #car | #yr | #gm | Date | @Bat | Pitcher | Score | Inn | Out | RoB | RBI | BOP | Pos | WPA | bWE | Notes | Play Description | ||
| 35 | 35 | 1 | 1 | 1974-04-26 | PHI | @ | SDP | Dave Freisleben | behind 0-2 | t 6 | 1 | 1-- | 2 | 3 | 8 | 0.263 | 47% | Home Run; Cash Scores | |
| 36 | 36 | 2 | 1 | 1974-05-18 | PHI | @ | PIT | John Morlan | ahead 5-1 | t 6 | 2 | 12- | 3 | 3 | 8 | 0.057 | 99% | Home Run; Cash Scores; Bowa Scores | |
| 37 | 37 | 3 | 1 | 1974-05-22 | PHI | @ | STL | Alan Foster | ahead 2-0 | t 5 | 2 | 1-- | 2 | 3 | 8 | 0.150 | 90% | Home Run; Cash Scores | |
| 38 | 38 | 4 | 1 | 1974-06-04 | PHI | ATL | Roric Harrison | behind 0-1 | b 2 | 0 | --- | 1 | 5 | 8 | 0.114 | 55% | Home Run | ||
| 39 | 39 | 5 | 1 | 1974-07-10 | PHI | LAD | Don Sutton | behind 0-1 | b 4 | 1 | 1-- | 2 | 5 | 8 | 0.246 | 67% | Home Run; Montanez Scores | ||
| 40 | 40 | 6 | 1 | 1974-07-14 (2) | PHI | @ | SFG | Tom Bradley | tied 0-0 | t 1 | 2 | -23 | 3 | 5 | 8 | 0.239 | 75% | Home Run; Cash Scores; Schmidt Scores | |
| 41 | 41 | 7 | 1 | 1974-08-01 | PHI | MON | Ernie McAnally | behind 1-2 | b 3 | 1 | 12- | 3 | 5 | 8 | 0.279 | 76% | Home Run; Schmidt Scores; Montanez Scores | ||
| 42 | 42 | 8 | 1 | 1974-08-21 | PHI | @ | CIN | Dick Baney | ahead 9-3 | t 9 | 0 | --- | 1 | 5 | 8 | 0.001 | 100% | Home Run | |
| 43 | 43 | 9 | 1 | 1974-08-30 | PHI | HOU | Don Wilson | behind 1-3 | b 6 | 2 | --- | 1 | 6 | 8 | 0.129 | 32% | Home Run | ||
| 44 | 44 | 10 | 1 | 1974-09-12 | PHI | PIT | Bruce Kison | tied 4-4 | b 8 | 2 | 1-- | 2 | 7 | PH | 0.383 | 93% | Home Run; Johnstone Scores | ||
| 45 | 45 | 11 | 1 | 1974-09-20 | PHI | @ | MON | Don DeMola | ahead 6-1 | t 5 | 2 | 1-- | 2 | 7 | 8 | 0.041 | 98% | Home Run; Johnstone Scores | |
| 1975 HRs | #car | #yr | #gm | Date | @Bat | Pitcher | Score | Inn | Out | RoB | RBI | BOP | Pos | WPA | bWE | Notes | Play Description | ||
| 46 | 46 | 1 | 1 | 1975-04-11 | NYM | @ | PIT | Larry Demery | ahead 2-0 | t 8 | 2 | --- | 1 | 7 | 8 | 0.070 | 93% | Home Run | |
| 47 | 47 | 2 | 1 | 1975-04-23 | NYM | STL | Al Hrabosky | ahead 6-1 | b 7 | 2 | --- | 1 | 3 | 8 | 0.007 | 99% | Home Run | ||
| 48 | 48 | 3 | 1 | 1975-05-26 | NYM | LAD | Andy Messersmith | tied 1-1 | b 3 | 0 | --- | 1 | 1 | 8 | 0.127 | 68% | Home Run | ||
| 49 | 49 | 4 | 1 | 1975-05-30 | NYM | SDP | Randy Jones | tied 0-0 | b 1 | 0 | --- | 1 | 1 | 8 | 0.109 | 65% | Lead-Off | Home Run | |
| 50 | 50 | 5 | 1 | 1975-07-29 (1) | NYM | @ | STL | Lynn McGlothen | behind 1-4 | t 6 | 1 | --- | 1 | 6 | 8 | 0.075 | 18% | Home Run | |
| 51 | 51 | 6 | 1 | 1975-08-19 | NYM | @ | HOU | Larry Dierker | tied 0-0 | t 3 | 1 | --- | 1 | 1 | 8 | 0.132 | 61% | Home Run | |
| 52 | 52 | 7 | 1 | 1975-08-23 | NYM | @ | SFG | John Montefusco | tied 0-0 | t 4 | 0 | --- | 1 | 1 | 8 | 0.130 | 63% | Home Run | |
| 53 | 53 | 8 | 1 | 1975-08-28 | NYM | @ | LAD | Mike Marshall | ahead 2-1 | t 7 | 1 | -2- | 2 | 1 | 8 | 0.168 | 90% | Home Run; Stearns Scores | |
| 54 | 54 | 9 | 1 | 1975-09-07 | NYM | STL | Lynn McGlothen | behind 3-12 | b 9 | 1 | --- | 1 | 1 | 8 | 0.000 | 0% | Home Run | ||
| 55 | 55 | 10 | 1 | 1975-09-13 | NYM | @ | STL | Ron Reed | tied 0-0 | t 1 | 0 | --- | 1 | 1 | 8 | 0.101 | 60% | Lead-Off | Home Run |
| 1976 HRs | #car | #yr | #gm | Date | @Bat | Pitcher | Score | Inn | Out | RoB | RBI | BOP | Pos | WPA | bWE | Notes | Play Description | ||
| 56 | 56 | 1 | 1 | 1976-04-19 | NYM | @ | STL | Mike Wallace | tied 3-3 | t 17 | 2 | --- | 1 | 7 | 8 | 0.421 | 83% | Home Run | |
| 57 | 57 | 2 | 1 | 1976-04-20 | NYM | @ | STL | Lynn McGlothen | ahead 2-0 | t 1 | 2 | -2- | 2 | 6 | 8 | 0.140 | 83% | Home Run; Kranepool Scores | |
| 58 | 58 | 3 | 1 | 1976-05-02 (2) | NYM | HOU | Tom Griffin | ahead 5-4 | b 8 | 2 | 1-- | 2 | 1 | 8 | 0.105 | 98% | Home Run; Lockwood Scores | ||
| 59 | 59 | 4 | 1 | 1976-05-23 | NYM | @ | MON | Don Carrithers | behind 2-3 | t 6 | 1 | 1-- | 2 | 7 | 8 | 0.313 | 65% | Home Run; Hodges Scores | |
| 60 | 60 | 5 | 1 | 1976-06-23 | NYM | @ | STL | Pete Falcone | behind 0-3 | t 3 | 0 | --- | 1 | 8 | 8 | 0.085 | 27% | Home Run | |
| 61 | 61 | 6 | 1 | 1976-07-22 | MON | ATL | Bruce Dal Canton | behind 0-5 | b 8 | 0 | --- | 1 | 2 | 7 | 0.020 | 4% | Home Run | ||
| 62 | 62 | 7 | 1 | 1976-07-23 | MON | NYM | Skip Lockwood | tied 2-2 | b 11 | 1 | --- | 1 | 3 | 7 | 0.425 | 100% | Walk-Off | Home Run | |
| 63 | 63 | 8 | 1 | 1976-08-05 | MON | CHC | Ray Burris | behind 1-4 | b 6 | 2 | 1-- | 2 | 5 | 7 | 0.196 | 31% | Home Run (Line Drive); Williams Scores | ||
| 64 | 64 | 9 | 1 | 1976-09-02 (2) | MON | LAD | Rick Rhoden | behind 0-3 | b 2 | 0 | --- | 1 | 5 | 9 | 0.091 | 33% | Home Run | ||
| 65 | 65 | 10 | 1 | 1976-09-04 | MON | PIT | Doc Medich | tied 0-0 | b 3 | 1 | --- | 1 | 1 | 8 | 0.126 | 66% | Home Run | ||
| 66 | 66 | 11 | 1 | 1976-09-18 (2) | MON | STL | Eddie Solomon | behind 0-4 | b 1 | 0 | --- | 1 | 1 | 9 | 0.071 | 25% | Lead-Off | Home Run | |
| 67 | 67 | 12 | 1 | 1976-09-19 (1) | MON | STL | Lynn McGlothen | behind 3-4 | b 7 | 1 | --- | 1 | 1 | 9 | 0.248 | 55% | Home Run | ||
| 1977 HRs | #car | #yr | #gm | Date | @Bat | Pitcher | Score | Inn | Out | RoB | RBI | BOP | Pos | WPA | bWE | Notes | Play Description | ||
| 68 | 68 | 1 | 1 | 1977-05-01 | MON | @ | LAD | Elias Sosa | tied 2-2 | t 6 | 2 | -23 | 3 | 6 | 8 | 0.339 | 85% | Home Run; Speier Scores; Perez Scores | |
| 69 | 69 | 2 | 1 | 1977-05-07 | MON | @ | SDP | Victor Bernal | ahead 5-2 | t 7 | 2 | --- | 1 | 7 | 8 | 0.047 | 95% | Home Run | |
| 70 | 70 | 3 | 1 | 1977-05-28 | MON | @ | STL | Eric Rasmussen | behind 3-7 | t 9 | 2 | --3 | 2 | 7 | 8 | 0.007 | 1% | Home Run; Cromartie Scores | |
| 71 | 71 | 4 | 1 | 1977-05-29 | MON | @ | STL | John Urrea | ahead 10-3 | t 7 | 0 | 1-- | 2 | 6 | 3 | 0.005 | 100% | Home Run; Cromartie Scores | |
| 72 | 72 | 5 | 1 | 1977-07-04 (2) | MON | @ | CHC | Steve Renko | ahead 1-0 | t 1 | 2 | -2- | 2 | 5 | 8 | 0.154 | 73% | Home Run; Morales Scores | |
| 73 | 73 | 6 | 1 | 1977-07-10 | MON | @ | NYM | Pat Zachry | tied 0-0 | t 5 | 2 | --- | 1 | 7 | 3 | 0.161 | 61% | Home Run | |
| 74 | 74 | 7 | 1 | 1977-07-22 | MON | @ | LAD | Burt Hooton | tied 1-1 | t 5 | 0 | --- | 1 | 7 | 8 | 0.144 | 64% | Home Run | |
| 75 | 75 | 8 | 1 | 1977-07-25 | MON | @ | SFG | Dave Heaverlo | ahead 2-0 | t 8 | 2 | 1-- | 2 | 9 | PH | 0.106 | 96% | Home Run; Garrett Scores | |
| 76 | 76 | 9 | 1 | 1977-08-10 (2) | MON | @ | PHI | Ron Reed | behind 0-6 | t 8 | 0 | --- | 1 | 6 | 3 | 0.009 | 2% | Home Run | |
| 77 | 77 | 10 | 1 | 1977-08-14 | MON | @ | STL | Eric Rasmussen | ahead 3-2 | t 6 | 1 | --- | 1 | 5 | 9 | 0.129 | 77% | Home Run (CF-RF) | |
| 78 | 78 | 11 | 1 | 1977-08-20 | MON | ATL | Buzz Capra | ahead 3-1 | b 4 | 0 | --- | 1 | 6 | 9 | 0.075 | 87% | Home Run | ||
| 79 | 79 | 12 | 1 | 1977-08-21 | MON | ATL | Dick Ruthven | ahead 6-4 | b 6 | 1 | 1-- | 2 | 3 | 9 | 0.097 | 95% | Home Run; Cash Scores | ||
| 1978 HRs | #car | #yr | #gm | Date | @Bat | Pitcher | Score | Inn | Out | RoB | RBI | BOP | Pos | WPA | bWE | Notes | Play Description | ||
| 80 | 80 | 1 | 1 | 1978-06-14 (1) | MON | @ | SDP | Eric Rasmussen | behind 1-4 | t 7 | 0 | --- | 1 | 7 | 8 | 0.071 | 15% | Home Run | |
| 81 | 81 | 2 | 1 | 1978-07-01 | MON | STL | Mark Littell | tied 2-2 | b 9 | 2 | --- | 1 | 4 | 3 | 0.469 | 100% | Walk-Off | Home Run | |
| 1979 HRs | #car | #yr | #gm | Date | @Bat | Pitcher | Score | Inn | Out | RoB | RBI | BOP | Pos | WPA | bWE | Notes | Play Description | ||
| 82 | 82 | 1 | 1 | 1979-06-01 | PHI | @ | CIN | Bill Bonham | behind 0-2 | t 7 | 0 | --- | 1 | 5 | 9 | 0.124 | 30% | Home Run (CF-RF) | |
| 83 | 83 | 2 | 1 | 1979-06-30 | PHI | @ | STL | George Frazier | behind 2-4 | t 9 | 2 | 1-- | 2 | 7 | PH | 0.365 | 40% | Home Run; Maddox Scores | |
| 84 | 84 | 3 | 1 | 1979-07-05 | PHI | NYM | Craig Swan | behind 0-3 | b 7 | 2 | 1-- | 2 | 2 | PH | 0.182 | 27% | Home Run; Gross Scores | ||
| 85 | 85 | 4 | 1 | 1979-07-10 | PHI | SDP | Rollie Fingers | behind 3-5 | b 9 | 2 | 1-3 | 3 | 2 | PH | 0.906 | 100% | Walk-Off | Home Run; Boone Scores; McBride Scores | |
| 86 | 86 | 5 | 1 | 1979-08-05 (1) | PHI | @ | PIT | Joe Coleman | ahead 7-3 | t 5 | 0 | --- | 1 | 5 | 3 | 0.039 | 94% | Home Run | |
| 87 | 87 | 6 | 1 | 1979-09-19 (2) | PHI | PIT | Jim Bibby | behind 1-5 | b 5 | 1 | --3 | 2 | 9 | PH | 0.107 | 25% | Home Run; Moreland Scores |
Much of the data on Baseball-Reference.com's Home Run Logs comes from the Tattersall/McConnell Home Run Log, a database of all homers hit in the major leagues since 1876. This project was begun in the 1940's by John C. Tattersall and was continued after Tattersall's death in 1981 by Bob McConnell, one of SABR's original 16 members. David Vincent, another SABR member, has since assumed the leadership of the project. Baseball-Reference.com has licensed this remarkable database from the Society for American Baseball Research. All credit for the data therein goes to the intrepid researchers who digitized this data from archival sources.
For years from 1916 to 2013, RetroSheet play-by-play data has been used whenever the home run occurred in a game for which we have complete play-by-play data.
There are a handful of cases where the home run logs totals do not agree with the totals on our player pages. We are working to reconcile all of those differences, but believe that in all cases the Home Run Encyclopedia is correct.