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Jerry Koosman

Jerome Martin Koosman (Kooz)

Position: Pitcher
Bats: Right, Throws: Left
Height: 6' 2", Weight: 205 lb.

Born: December 23, 1942 in Appleton, MN
High School: West Central School of Agriculture (Morris, MN)
School: University of Minnesota, Morris (Morris, MN)
by the New York Mets as an amateur free agent in 1964. (All Transactions)
Debut: April 14, 1967 (Age 24.112, 10,166th in MLB history)   vs. PHI 2.2 IP, 0 H, 2 SO, 2 BB, 0 ER
Rookie Status: Exceeded rookie limits during 1968 season [*]
Teams (by GP): Mets/Twins/WhiteSox/Phillies 1967-1985

Last Game: August 21, 1985 (Age 42.241)   vs. LAD 0.2 IP, 5 H, 0 SO, 2 BB, 5 ER, L
View Player Bio from the SABR BioProject
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Career Home Runs

For all seasons after 1973, the play-by-play data is complete (summary of missing data for pre-1974). For some games from 1954 to 1973, we do not have complete play-by-play.

Jerry Koosman: 2 Career Home Runs

0 leading off, 0 walk-off, 1 tying, 0 go ahead (For more accurate walk-off HR totals, see the Batting Event Finder)
1 Tm
vs RHP2
Medium Lev2
2 Opps
2 Pitchers
Bill Hands1
John Montefusco1
1 Park
Shea Stad2
Where Hit
General field locations
when available.
Game Totals
1·HR gms2
Gms w/ this # = 0
are not shown.
0 on2
Before event,
for batter

Play By Play

View Pitches · WE and WPA Explanation
1968 HRs #car #yr #gm Date @Bat   Pitcher Score Inn Out RoB RBI BOP Pos WPA bWE Notes Play Description
1 1 1 1 1968-09-18 NYM CHC Bill Hands behind 0-1 b 3 0 --- 1 9 1 0.146 55% Home Run
1977 HRs #car #yr #gm Date @Bat   Pitcher Score Inn Out RoB RBI BOP Pos WPA bWE Notes Play Description
2 2 1 1 1977-05-17 NYM SFG John Montefusco ahead 2-1 b 7 0 --- 1 9 1 0.098 90% Home Run

About the SABR Home Run Encyclopedia

Much of the data on'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. 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 1914 to 2015, 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.