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Dave Koslo

George Bernard Koslo
born George Bernard Koslowski

Position: Pitcher
Bats: Left, Throws: Left
Height: 5' 11", Weight: 180 lb.

Born: March 31, 1920 in Menasha, WI
High School: Menasha (Menasha, WI) (All Transactions)
Debut: September 12, 1941
Teams (by GP): Giants/Braves/Orioles 1941-1955

Final Game: April 14, 1955
Died: December 1, 1975 in Menasha, WI
Buried: St. John Cemetery, Menasha, WI
    About biographical information


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Fine Details  · Last Updated Feb 10, 2012, 12:11AM
All-Time Rank (among Pitchers): #821. Kirk McCaskill… #822. Dave Boswell… #823. Doug Davis… #824. DAVE KOSLO… #825. Joe Magrane… #826. Scott Baker… #827. Vicente Padilla… 

Standard Pitching

More Stats

Year Age Tm Lg W L W-L% ERA G GS GF CG SHO SV IP H R ER HR BB IBB SO HBP BK WP BF ERA+ WHIP H/9 HR/9 BB/9 SO/9 SO/BB Awards
1941 21 NYG NL 1 2 .333 1.90 4 3 0 2 0 0 23.2 17 6 5 0 10 12 0 0 1 94 198 1.141 6.5 0.0 3.8 4.6 1.20
1942 22 NYG NL 3 6 .333 5.08 19 11 2 3 1 0 78.0 79 49 44 7 32 42 1 0 0 344 67 1.423 9.1 0.8 3.7 4.8 1.31
1946 26 NYG NL 14 19 .424 3.63 40 35 5 17 3 1 265.1 251 119 107 15 101 121 5 0 5 1136 95 1.327 8.5 0.5 3.4 4.1 1.20
1947 27 NYG NL 15 10 .600 4.39 39 31 6 10 3 0 217.1 223 118 106 23 82 86 3 0 5 958 93 1.403 9.2 1.0 3.4 3.6 1.05
1948 28 NYG NL 8 10 .444 3.87 35 18 6 5 3 3 149.0 168 69 64 7 62 58 1 0 1 655 103 1.544 10.1 0.4 3.7 3.5 0.94
1949 29 NYG NL 11 14 .440 2.50 38 23 12 15 0 4 212.0 193 72 59 13 43 64 0 0 3 856 160 1.113 8.2 0.6 1.8 2.7 1.49
1950 30 NYG NL 13 15 .464 3.91 40 22 15 7 1 3 186.2 190 89 81 18 68 56 5 0 2 794 105 1.382 9.2 0.9 3.3 2.7 0.82
1951 31 NYG NL 10 9 .526 3.31 39 16 17 5 2 3 149.2 153 68 55 18 45 54 2 0 0 644 119 1.323 9.2 1.1 2.7 3.2 1.20
1952 32 NYG NL 10 7 .588 3.19 41 17 11 8 2 5 166.1 154 66 59 10 47 67 2 0 2 691 116 1.208 8.3 0.5 2.5 3.6 1.43
1953 33 NYG NL 6 12 .333 4.76 37 12 14 2 0 2 111.2 135 70 59 8 36 36 1 1 1 496 91 1.531 10.9 0.6 2.9 2.9 1.00
1954 34 TOT MLB 1 2 .333 3.13 15 1 4 0 0 1 31.2 33 13 11 1 12 10 0 0 1 134 120 1.421 9.4 0.3 3.4 2.8 0.83
1954 34 BAL AL 0 1 .000 3.14 3 1 1 0 0 0 14.1 20 7 5 1 3 3 0 0 0 63 117 1.605 12.6 0.6 1.9 1.9 1.00
1954 34 MLN NL 1 1 .500 3.12 12 0 3 0 0 1 17.1 13 6 6 0 9 7 0 0 1 71 123 1.269 6.8 0.0 4.7 3.6 0.78
1955 35 MLN NL 0 1 .000 inf 1 0 1 0 0 0 0.0 1 1 1 1 0 0 0 0 0 0 1 17
12 Seasons 92 107 .462 3.68 348 189 93 74 15 22 1591.1 1597 740 651 121 538 0 606 20 1 21 6803 105 1.342 9.0 0.7 3.0 3.4 1.13
162 Game Avg. 12 14 .462 3.68 44 24 12 9 2 3 202 202 94 82 15 68 77 3 0 3 861 105 1.342 9.0 0.7 3.0 3.4 1.13
NYG (10 yrs) 91 104 .467 3.69 332 188 88 74 15 21 1559.2 1563 726 639 119 526 596 20 1 20 6668 105 1.339 9.0 0.7 3.0 3.4 1.13
MLN (2 yrs) 1 2 .333 3.63 13 0 4 0 0 1 17.1 14 7 7 1 9 0 7 0 0 1 72 108 1.327 7.3 0.5 4.7 3.6 0.78
BAL (1 yr) 0 1 .000 3.14 3 1 1 0 0 0 14.1 20 7 5 1 3 3 0 0 0 63 117 1.605 12.6 0.6 1.9 1.9 1.00
NL (12 yrs) NL 92 106 .465 3.69 345 188 92 74 15 22 1577.0 1577 733 646 120 535 0 603 20 1 21 6740 105 1.339 9.0 0.7 3.1 3.4 1.13
AL (1 yr) AL 0 1 .000 3.14 3 1 1 0 0 0 14.1 20 7 5 1 3 3 0 0 0 63 117 1.605 12.6 0.6 1.9 1.9 1.00

Player Value--Pitchers

WAR: 8+ MVP, 5+ A-S, 2+ Strtr, 0-2 Sub, < 0 Repl.
Year Age Tm Lg IP GS R Rrep Rdef aLI RAR WAR Salary Awards
1941 21 NYG NL 23.2 3 6 13 0 1.0 7 0.8 $
1942 22 NYG NL 78.0 11 49 37 1 1.0 -12 -1.4 $
1946 26 NYG NL 265.1 35 119 136 0 1.0 17 2.0 $
1947 27 NYG NL 217.1 31 118 131 0 1.0 13 1.3 $
1948 28 NYG NL 149.0 18 69 87 0 1.0 18 1.9 $
1949 29 NYG NL 212.0 23 72 126 2 1.0 54 5.3 $
1950 30 NYG NL 186.2 22 89 116 6 1.0 27 1.9 $
1951 31 NYG NL 149.2 16 68 88 2 1.0 20 1.7 $
1952 32 NYG NL 166.1 17 66 92 1 1.0 26 2.6 $
1953 33 NYG NL 111.2 12 70 73 0 1.1 3 0.1 $
1954 34 BAL AL 14.1 1 7 10 0 .5 3 0.2 $
1954 34 MLN NL 17.1 0 6 10 0 1.1 4 0.3 $
1955 35 MLN NL 0.0 0 1 0 0 2.2 -1 0.0 $
12 Seasons 1591.1 189 740 919 12 1.0 179 16.7 $
NYG (10 yrs) 1559.2 188 726 899 12 1.0 173 16.2 $
MLN (2 yrs) 17.1 0 7 10 0 1.1 3 0.3 $
BAL (1 yr) 14.1 1 7 10 0 .5 3 0.2 $

Postseason Pitching

Year Age Tm Lg Series Rslt Opp W L W-L% ERA G GS GF CG SHO SV IP H R ER HR BB IBB SO HBP BK WP BF WHIP H/9 HR/9 BB/9 SO/9 SO/BB
1951 31 NYG NL WS L NYY 1 1 .500 3.00 2 2 0 1 0 0 15.0 12 5 5 0 7 2 6 0 0 1 63 1.267 7.2 0.0 4.2 3.6 0.86
1 WS 1 1 .500 3.00 2 2 0 1 0 0 15.0 12 5 5 0 7 2 6 0 0 1 63 1.267 7.2 0.0 4.2 3.6 0.86

Standard Batting

More Stats

Year Age Tm Lg G PA AB R H 2B 3B HR RBI SB CS BB SO BA OBP SLG OPS OPS+ TB GDP HBP SH SF IBB Pos Awards
1941 21 NYG NL 4 9 9 0 1 0 0 0 0 0 0 7 .111 .111 .111 .222 -38 1 0 0 0 /1
1942 22 NYG NL 19 27 25 4 3 2 0 0 1 0 2 10 .120 .185 .200 .385 12 5 1 0 0 1
1946 26 NYG NL 41 93 88 7 11 2 0 0 6 0 4 39 .125 .163 .148 .311 -12 13 1 0 1 1
1947 27 NYG NL 39 87 78 6 10 1 0 0 2 0 8 37 .128 .209 .141 .350 -6 11 0 0 1 1
1948 28 NYG NL 35 49 44 2 5 2 0 0 4 0 1 16 .114 .152 .159 .311 -16 7 0 1 3 1
1949 29 NYG NL 39 80 69 4 10 2 0 2 7 0 5 27 .145 .203 .261 .464 23 18 1 0 6 1
1950 30 NYG NL 40 72 65 4 8 1 0 1 6 0 6 24 .123 .197 .185 .382 1 12 0 0 1 1
1951 31 NYG NL 39 56 50 1 5 1 0 0 1 1 1 6 18 .100 .196 .120 .316 -13 6 1 0 0 1
1952 32 NYG NL 41 60 54 3 2 1 0 0 3 0 0 3 31 .037 .088 .056 .143 -60 3 0 0 3 1
1953 33 NYG NL 37 34 30 0 1 0 0 0 0 0 0 1 11 .033 .065 .033 .098 -74 1 1 0 3 1
1954 34 TOT MLB 15 4 4 0 0 0 0 0 0 0 0 0 2 .000 .000 .000 .000 -100 0 0 0 0 0 1
1954 34 BAL AL 3 3 3 0 0 0 0 0 0 0 0 0 2 .000 .000 .000 .000 -100 0 0 0 0 0 1/1
1954 34 MLN NL 12 1 1 0 0 0 0 0 0 0 0 0 0 .000 .000 .000 .000 -100 0 0 0 0 0 1/1
1955 35 MLN NL 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 /1
12 Seasons 350 571 516 31 56 12 0 3 30 1 1 36 222 .109 .168 .149 .317 -14 77 5 1 18 0 0
162 Game Avg. 162 264 239 14 26 6 0 1 14 0 17 103 .109 .168 .149 .317 -14 36 2 0 8
NYG (10 yrs) 334 567 512 31 56 12 0 3 30 1 1 36 220 .109 .169 .150 .320 -13 77 5 1 18
MLN (2 yrs) 13 1 1 0 0 0 0 0 0 0 0 0 0 .000 .000 .000 .000 -100 0 0 0 0 0 0
BAL (1 yr) 3 3 3 0 0 0 0 0 0 0 0 0 2 .000 .000 .000 .000 -100 0 0 0 0 0
NL (12 yrs) 347 568 513 31 56 12 0 3 30 1 1 36 220 .109 .169 .150 .319 -13 77 5 1 18 0 0
AL (1 yr) 3 3 3 0 0 0 0 0 0 0 0 0 2 .000 .000 .000 .000 -100 0 0 0 0 0

Player Value--Batters

WAR: 8+ MVP, 5+ A-S, 2+ Strtr, 0-2 Sub, < 0 Repl.
Year Age Tm Lg PA Rbat Rbaser Rroe Rdp Rfield Rpos Rrep RAR WAR oRAR oWAR dWAR Salary Pos Awards
1941 21 NYG NL 9 -2 0 0 0 0 1 0 -1 -0.1 -1 -0.1 0.0 $ /1
1942 22 NYG NL 27 -3 0 0 0 0 2 1 0 -0.1 0 0.0 -0.1 $ 1
1946 26 NYG NL 93 -13 0 0 0 0 6 3 -4 -0.5 -4 -0.4 -0.1 $ 1
1947 27 NYG NL 87 -12 0 0 0 0 7 3 -2 -0.2 -2 -0.2 0.0 $ 1
1948 28 NYG NL 49 -7 0 0 0 0 3 2 -2 -0.3 -2 -0.2 -0.1 $ 1
1949 29 NYG NL 80 -8 0 0 0 0 6 3 1 0.1 1 0.1 0.0 $ 1
1950 30 NYG NL 72 -10 0 0 0 0 6 3 -2 -0.2 -1 -0.1 -0.1 $ 1
1951 31 NYG NL 56 -8 -1 0 0 0 4 2 -3 -0.3 -3 -0.3 0.0 $ 1
1952 32 NYG NL 60 -12 0 0 0 0 4 2 -6 -0.7 -6 -0.6 -0.1 $ 1
1953 33 NYG NL 34 -8 0 -1 0 0 2 1 -6 -0.6 -6 -0.6 0.0 $ 1
1954 34 BAL AL 3 -1 0 0 0 0 0 0 -1 -0.1 -1 -0.1 0.0 $ 1/1
1954 34 MLN NL 1 0 0 0 0 0 0 0 0 0.0 0 0.0 0.0 $ 1/1
11 Seasons 571 -84 -1 -1 0 0 41 20 -26 -3.0 -25 -2.5 -0.5 $
NYG (10 yrs) 567 -83 -1 -1 0 0 41 20 -25 -2.9 -24 -2.4 -0.5 $
MLN (1 yr) 1 0 0 0 0 0 0 0 0 0.0 0 0.0 0.0 $
BAL (1 yr) 3 -1 0 0 0 0 0 0 -1 -0.1 -1 -0.1 0.0 $

Postseason Batting

Year Age Tm Lg Series Opp Rslt G PA AB R H 2B 3B HR RBI SB CS BB SO BA OBP SLG OPS TB GDP HBP SH SF IBB
1951 31 NYG NL WS NYY L 2 7 5 0 0 0 0 0 0 0 0 0 2 .000 .000 .000 .000 0 0 0 2 0 0
1 WS 2 7 5 0 0 0 0 0 0 0 0 0 2 .000 .000 .000 .000 0 0 0 2 0 0

Standard Fielding

More Stats

Year Tm Lg Age Pos G GS CG Inn Ch PO A E DP Fld% RF/9 RF/G lgFld% lgRF9 lgRFG SB CS CS% PO Awards
1941 NYG NL 21 P 4 23.2 4 0 3 1 0 .750 1.14 0.75 .965 2.24 2.20
1942 NYG NL 22 P 19 78.0 15 1 13 1 0 .933 1.62 0.74 .968 2.35 2.35
1946 NYG NL 26 P 40 265.1 74 10 61 3 1 .959 2.41 1.78 .960 2.24 2.22
1947 NYG NL 27 P 39 217.1 51 13 36 2 2 .961 2.03 1.26 .966 2.10 2.07
1948 NYG NL 28 P 35 149.0 32 8 24 0 1 1.000 1.93 0.91 .963 2.11 2.08
1949 NYG NL 29 P 38 212.0 46 7 39 0 4 1.000 1.95 1.21 .953 2.04 2.02
1950 NYG NL 30 P 40 186.2 44 5 37 2 3 .955 2.02 1.05 .961 2.12 2.10
1951 NYG NL 31 P 39 149.2 45 7 38 0 2 1.000 2.71 1.15 .962 2.14 2.14
1952 NYG NL 32 P 41 166.1 53 16 33 4 7 .925 2.65 1.20 .953 2.18 2.16
1953 NYG NL 33 P 37 111.2 30 7 22 1 3 .967 2.34 0.78 .956 2.06 2.02
1954 TOT MLB 34 P 15 31.2 2 1 1 0 0 1.000 0.57 0.13 .960 2.05 2.05
1954 MLN NL 34 P 12 17.1 0 0 0 0 0 0.00 0.00 2.08 2.06
1954 BAL AL 34 P 3 14.1 2 1 1 0 0 1.000 1.26 0.67 .960 2.01 2.00
1955 MLN NL 35 P 1 0.0 0 0 0 0 0 0.00 2.00
12 Seasons P 348 1591.1 396 75 307 14 23 .965 2.16 1.10 .960 2.14 2.11
12 Seasons TOT 348 1591.1 396 75 307 14 23 .965 2.16 1.10 .960 2.14 2.11
Note: Fielding stats are a combination of official records and RetroSheet records. Both are likely to have substantial errors and will not match perfectly.
View Complete Notes on Fielding Data
Leagues historically made no effort to balance team, league, and player fielding stats. Since 1990 or so, computers have made this feasible, but prior to that there are hundreds or thousands of discrepancies each year in games played (even whether a player played a position), putouts, assists, double plays and errors.
  • Pre-1950 SB & CS data for catchers is estimated from catcher assists, games started and opposition stolen bases.
  • From 1950 on SB, CS, Pickoff, & WP data for catchers and pitchers is taken from play-by-play accounts in the retrosheet files. There are several hundred games without pbp from 1950 to 1973 and for those we may not have any data.
  • CG & GS come from the retrosheet data and should be complete and pretty accurate from 1919 on.
  • Innings played (like SB and CS) come from the retrosheet play-by-play data and should be considered mostly complete from 1950 to 1973 and complete from then on.
  • Stats (PO,A,G, etc) for LF-CF-RF positions (since 1919) is taken from play-by-play or box score data as available.
  • Stats (PO,A,G,etc) for C,P,1B,2B,3B,SS,OF positions is taken from the official reported totals and may have been corrected at various times since their publication.
  • For detailed information on which games retrosheet is missing play-by-play from 1950 to 1973, please see their most wanted games list
  • For detailed information on the availability of data on this site by year, see our data coverage page

Appearances on Leader Boards, Awards, and Honors

Stats are Year-Value-Rank · Glossary

Wins Above Replacements c a p y
1949 NL  5.4 (8th)

WAR for Pitcherss c a p y
1949 NL  5.3 (5th)

Earned Run Average s c a p y
1949 NL  2.50 (1st)

Wins s c a p y
1946 NL  14 (6th)
1947 NL  15 (10th)

Win-Loss % s c a p y
1947 NL  .600 (10th)

Walks & Hits per IP s c a p y
1949 NL  1.113 (1st)

Hits per 9 IP s c a p y
1949 NL  8.193 (2nd)

Bases On Balls per 9 IP s c a p y
1949 NL  1.826 (1st)

Strikeouts per 9 IP s c a p y
1946 NL  4.104 (9th)

Games Played s c a p y
1946 NL  40 (9th)

Saves s c a p y
1949 NL  4 (9th)
1950 NL  3 (10th)
1952 NL  5 (9th)

Innings Pitched s c a p y
1946 NL  265.3 (2nd)

Strikeouts s c a p y
1946 NL  121 (4th)

Games Started s c a p y
1946 NL  35 (1st)
1947 NL  31 (7th)

Complete Games s c a p y
1946 NL  17 (3rd)
1949 NL  15 (7th)

Shutouts s c a p y
1946 NL  3 (6th)
1947 NL  3 (6th)
1948 NL  3 (6th)

Home Runs s c a p y
1946 NL  15 (2nd)
1947 NL  23 (1st)

Bases on Balls s c a p y
1946 NL  101 (4th)

Hits s c a p y
1946 NL  251 (1st)
1947 NL  223 (8th)

Strikeouts / Base On Balls s c a p y
1949 NL  1.488 (9th)

Home Runs per 9 IP s c a p y
1949 NL  0.552 (8th)
1952 NL  0.541 (7th)

Losses s c a p y
1946 NL  19 (1st)
1949 NL  14 (8th)
1950 NL  15 (8th)

Earned Runs s c a p y
1946 NL  107 (1st)
1947 NL  106 (1st)

Wild Pitches s c a p y
1946 NL  5 (3rd)
1947 NL  5 (8th)

Hit By Pitch s c a p y
1946 NL  5 (3rd)

Batters Faced s c a p y
1946 NL  1,136 (1st)
1947 NL  958 (9th)

Adjusted ERA+ s c a p y
1949 NL  160 (1st)

Adj. Pitching Runs s c a p y
1949 NL  33 (2nd)

Adj. Pitching Wins s c a p y
1949 NL  3.5 (3rd)

Base-Out Runs Saved (RE24)s c a p y
1952 NL  24.85 (7th)

Win Probability Added (WPA)s c a p y
1952 NL  2.6 (7th)

Base-Out Wins Saved (REW)s c a p y
1952 NL  2.7 (7th)

Putouts as P s c a p y
1947 NL  13 (5th)

Assists as P s c a p y
1946 NL  61 (1st)

Errors Committed as P s c a p y
1946 NL  3 (5th)
1952 NL  4 (3rd)

Range Factor/Game as P s c a p y
1946 NL  1.78 (5th)

Fielding % as P s c a p y
1948 NL  1.000 (1st)
1951 NL  1.000 (1st)

                                         

Statistics like WPA, REW and RE24 are computed from play-by-play data which is only complete from 1974 to the present. From 1950-1973, the data is incomplete, though for most seasons only less than 20 games per season total are missing. Please see our page on data coverage for a full view of the data used to create these leaderboards.

Hall Of Fame Statistics

Player rank in (·)

Black InkPitching - 7 (333), Average HOFer ≈ 40
Gray InkPitching - 45 (566), Average HOFer ≈ 185
Hall of Fame MonitorPitching - 11 (915), Likely HOFer ≈ 100
Hall of Fame StandardsPitching - 7 (1122), Average HOFer ≈ 50

Transactions

The transaction information used here was obtained free of charge from and is copyrighted by RetroSheet. We attempt to update transactions throughout the season.

Other Resources & Links

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Viewed 7,908 times through February 10, 2012.
Name and misspellings: George Bernard Dave davey david Koslo

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