

John Emil Jaha (born May 27, 1966) is an American former first baseman in Major League Baseball who had a 10-year career from 1992 to 2001. He played for the Milwaukee Brewers and Oakland Athletics, playing in both the American League and National League. He was elected to the American League All-Star team in 1999.
Career
Jaha graduated from David Douglas High School in Portland, Oregon, in 1984. He still holds most offensive baseball records for the school.
The Milwaukee Brewers selected Jaha in the 1984 Major League Baseball draft and he made his Major League debut with the Brewers on July 9, 1992. He also had success playing with the Daikyo Dolphins in the Australian Baseball League in 1991 and 1992 alongside Brewers and 1999 All-Star teammate, Dave Nilsson. Earlier in 1992, while playing for Brewers Triple-A affiliate Denver, Jaha became only the second player (after Joey Meyer) to hit a ball into the upper deck at Mile High Stadium.
In 1996, Jaha enjoyed his finest season with the Brewers, batting .300 with 34 home runs and 118 RBI. Despite the strong season, he was not selected to the All-Star team, having to contend with Frank Thomas, Mark McGwire, and Mo Vaughn for the first base position.
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| 1992-1998 | Permanent | - | - | ||
| 1999-2001 | Permanent | - | - |
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| Positions Played | MLB | 2001 | D |
| Intentional Bases on Balls | MLB | 2001 | 0 |
| Sacrifice Flies | MLB | 2001 | 1 |
| Sacrifice Hits | MLB | 2001 | 0 |
| Times Hit by a Pitch | MLB | 2001 | 0 |
| GIDP | MLB | 2001 | 3 |
| Total Bases | MLB | 2001 | 7 |
| Rbat+ | MLB | 2001 | -17 |
| rOBA | MLB | 2001 | .171 |
| OPS+ | MLB | 2001 | -5 |
| OPS | MLB | 2001 | .348 |
| SLG | MLB | 2001 | .156 |
| OBP | MLB | 2001 | .192 |
| Hits/At Bats | MLB | 2001 | .089 |
| Strikeouts | MLB | 2001 | 15 |
| Bases on Balls/Walks | MLB | 2001 | 6 |
| Caught Stealing | MLB | 2001 | 0 |
| Stolen Bases | MLB | 2001 | 0 |
| Runs Batted In | MLB | 2001 | 8 |
| Home Runs | MLB | 2001 | 0 |
| Triples | MLB | 2001 | 0 |
| Doubles | MLB | 2001 | 3 |
| Hits | MLB | 2001 | 4 |
| Runs Scored | MLB | 2001 | 2 |
| At Bats | MLB | 2001 | 45 |
| Plate Appearances | MLB | 2001 | 52 |
| Games Played | MLB | 2001 | 12 |
| Wins Above Replacement for position players | MLB | 2001 | -0.7 |
| Positions Played | MLB | 2000 | D/H |
| Intentional Bases on Balls | MLB | 2000 | 0 |
| Sacrifice Flies | MLB | 2000 | 0 |
| Sacrifice Hits | MLB | 2000 | 0 |
| Times Hit by a Pitch | MLB | 2000 | 3 |
| GIDP | MLB | 2000 | 4 |
| Total Bases | MLB | 2000 | 21 |
| Rbat+ | MLB | 2000 | 87 |
| rOBA | MLB | 2000 | .334 |
| OPS+ | MLB | 2000 | 66 |
| OPS | MLB | 2000 | .615 |
| SLG | MLB | 2000 | .216 |
| OBP | MLB | 2000 | .398 |
| Hits/At Bats | MLB | 2000 | .175 |
| Strikeouts | MLB | 2000 | 38 |
| Bases on Balls/Walks | MLB | 2000 | 33 |
| Caught Stealing | MLB | 2000 | 0 |
| Stolen Bases | MLB | 2000 | 1 |
| Runs Batted In | MLB | 2000 | 5 |
| Home Runs | MLB | 2000 | 1 |
| Triples | MLB | 2000 | 0 |
| Doubles | MLB | 2000 | 1 |
| Hits | MLB | 2000 | 17 |
| Runs Scored | MLB | 2000 | 14 |
| At Bats | MLB | 2000 | 97 |
| Plate Appearances | MLB | 2000 | 133 |
| Games Played | MLB | 2000 | 33 |
| Wins Above Replacement for position players | MLB | 2000 | -0.1 |
| Positions Played | MLB | 1999 | *DH/3 |
| Intentional Bases on Balls | MLB | 1999 | 2 |
| Sacrifice Flies | MLB | 1999 | 3 |
| Sacrifice Hits | MLB | 1999 | 0 |
| Times Hit by a Pitch | MLB | 1999 | 9 |
| GIDP | MLB | 1999 | 14 |
| Total Bases | MLB | 1999 | 254 |
| Rbat+ | MLB | 1999 | 156 |
| rOBA | MLB | 1999 | .429 |
| OPS+ | MLB | 1999 | 152 |
| OPS | MLB | 1999 | .970 |
| SLG | MLB | 1999 | .556 |
| OBP | MLB | 1999 | .414 |
| Hits/At Bats | MLB | 1999 | .276 |
| Strikeouts | MLB | 1999 | 129 |
| Bases on Balls/Walks | MLB | 1999 | 101 |
| Caught Stealing | MLB | 1999 | 0 |
| Stolen Bases | MLB | 1999 | 2 |
| Runs Batted In | MLB | 1999 | 111 |
| Home Runs | MLB | 1999 | 35 |
| Triples | MLB | 1999 | 0 |
| Doubles | MLB | 1999 | 23 |
| Hits | MLB | 1999 | 126 |
| Runs Scored | MLB | 1999 | 93 |
| At Bats | MLB | 1999 | 457 |
| Plate Appearances | MLB | 1999 | 570 |
| Games Played | MLB | 1999 | 142 |
| Wins Above Replacement for position players | MLB | 1999 | 4.6 |
| Positions Played | MLB | 1997 | 3D/H |
| Intentional Bases on Balls | MLB | 1997 | 1 |
| Sacrifice Flies | MLB | 1997 | 2 |
| Sacrifice Hits | MLB | 1997 | 0 |
| Times Hit by a Pitch | MLB | 1997 | 3 |
| GIDP | MLB | 1997 | 6 |
| Total Bases | MLB | 1997 | 80 |
| Rbat+ | MLB | 1997 | 123 |
| rOBA | MLB | 1997 | .382 |
| OPS+ | MLB | 1997 | 118 |
| OPS | MLB | 1997 | .848 |
| SLG | MLB | 1997 | .494 |
| OBP | MLB | 1997 | .354 |
| Hits/At Bats | MLB | 1997 | .247 |
| Strikeouts | MLB | 1997 | 40 |
| Bases on Balls/Walks | MLB | 1997 | 25 |
| Caught Stealing | MLB | 1997 | 0 |
| Stolen Bases | MLB | 1997 | 1 |
| Runs Batted In | MLB | 1997 | 26 |
| Home Runs | MLB | 1997 | 11 |
| Triples | MLB | 1997 | 0 |
| Doubles | MLB | 1997 | 7 |
| Hits | MLB | 1997 | 40 |
| Runs Scored | MLB | 1997 | 25 |
| At Bats | MLB | 1997 | 162 |
| Plate Appearances | MLB | 1997 | 192 |
| Games Played | MLB | 1997 | 46 |
| Wins Above Replacement for position players | MLB | 1997 | 1.1 |
| Positions Played | MLB | 1996 | 3D/H |
| Intentional Bases on Balls | MLB | 1996 | 1 |
| Sacrifice Flies | MLB | 1996 | 3 |
| Sacrifice Hits | MLB | 1996 | 0 |
| Times Hit by a Pitch | MLB | 1996 | 5 |
| GIDP | MLB | 1996 | 16 |
| Total Bases | MLB | 1996 | 295 |
| Rbat+ | MLB | 1996 | 139 |
| rOBA | MLB | 1996 | .419 |
| OPS+ | MLB | 1996 | 133 |
| OPS | MLB | 1996 | .941 |
| SLG | MLB | 1996 | .543 |
| OBP | MLB | 1996 | .398 |
| Hits/At Bats | MLB | 1996 | .300 |
| Strikeouts | MLB | 1996 | 118 |
| Bases on Balls/Walks | MLB | 1996 | 85 |
| Caught Stealing | MLB | 1996 | 1 |
| Stolen Bases | MLB | 1996 | 3 |
| Runs Batted In | MLB | 1996 | 118 |
| Home Runs | MLB | 1996 | 34 |
| Triples | MLB | 1996 | 1 |
| Doubles | MLB | 1996 | 28 |
| Hits | MLB | 1996 | 163 |
| Runs Scored | MLB | 1996 | 108 |
| At Bats | MLB | 1996 | 543 |
| Plate Appearances | MLB | 1996 | 636 |
| Games Played | MLB | 1996 | 148 |
| Wins Above Replacement for position players | MLB | 1996 | 4.2 |
| Positions Played | MLB | 1995 | 3/DH |
| Intentional Bases on Balls | MLB | 1995 | 0 |
| Sacrifice Flies | MLB | 1995 | 1 |
| Sacrifice Hits | MLB | 1995 | 0 |
| Times Hit by a Pitch | MLB | 1995 | 4 |
| GIDP | MLB | 1995 | 8 |
| Total Bases | MLB | 1995 | 183 |
| Rbat+ | MLB | 1995 | 152 |
| rOBA | MLB | 1995 | .432 |
| OPS+ | MLB | 1995 | 144 |
| OPS | MLB | 1995 | .968 |
| SLG | MLB | 1995 | .579 |
| OBP | MLB | 1995 | .389 |
| Hits/At Bats | MLB | 1995 | .313 |
| Strikeouts | MLB | 1995 | 66 |
| Bases on Balls/Walks | MLB | 1995 | 36 |
| Caught Stealing | MLB | 1995 | 1 |
| Stolen Bases | MLB | 1995 | 2 |
| Runs Batted In | MLB | 1995 | 65 |
| Home Runs | MLB | 1995 | 20 |
| Triples | MLB | 1995 | 2 |
| Doubles | MLB | 1995 | 20 |
| Hits | MLB | 1995 | 99 |
| Runs Scored | MLB | 1995 | 59 |
| At Bats | MLB | 1995 | 316 |
| Plate Appearances | MLB | 1995 | 357 |
| Games Played | MLB | 1995 | 88 |
| Wins Above Replacement for position players | MLB | 1995 | 2.9 |
| Positions Played | MLB | 1994 | 3D/H |
| Intentional Bases on Balls | MLB | 1994 | 3 |
| Sacrifice Flies | MLB | 1994 | 4 |
| Sacrifice Hits | MLB | 1994 | 1 |
| Times Hit by a Pitch | MLB | 1994 | 10 |
| GIDP | MLB | 1994 | 8 |
| Total Bases | MLB | 1994 | 120 |
| Rbat+ | MLB | 1994 | 84 |
| rOBA | MLB | 1994 | .330 |
| OPS+ | MLB | 1994 | 88 |
| OPS | MLB | 1994 | .745 |
| SLG | MLB | 1994 | .412 |
| OBP | MLB | 1994 | .332 |
| Hits/At Bats | MLB | 1994 | .241 |
| Strikeouts | MLB | 1994 | 75 |
| Bases on Balls/Walks | MLB | 1994 | 32 |
| Caught Stealing | MLB | 1994 | 3 |
| Stolen Bases | MLB | 1994 | 3 |
| Runs Batted In | MLB | 1994 | 39 |
| Home Runs | MLB | 1994 | 12 |
| Triples | MLB | 1994 | 0 |
| Doubles | MLB | 1994 | 14 |
| Hits | MLB | 1994 | 70 |
| Runs Scored | MLB | 1994 | 45 |
| At Bats | MLB | 1994 | 291 |
| Plate Appearances | MLB | 1994 | 338 |
| Games Played | MLB | 1994 | 84 |
| Wins Above Replacement for position players | MLB | 1994 | -0.2 |
| Positions Played | MLB | 1993 | *3/H45 |
| Intentional Bases on Balls | MLB | 1993 | 4 |
| Sacrifice Flies | MLB | 1993 | 4 |
| Sacrifice Hits | MLB | 1993 | 4 |
| Times Hit by a Pitch | MLB | 1993 | 8 |
| GIDP | MLB | 1993 | 6 |
| Total Bases | MLB | 1993 | 214 |
| Rbat+ | MLB | 1993 | 101 |
| rOBA | MLB | 1993 | .341 |
| OPS+ | MLB | 1993 | 103 |
| OPS | MLB | 1993 | .753 |
| SLG | MLB | 1993 | .416 |
| OBP | MLB | 1993 | .337 |
| Hits/At Bats | MLB | 1993 | .264 |
| Strikeouts | MLB | 1993 | 109 |
| Bases on Balls/Walks | MLB | 1993 | 51 |
| Caught Stealing | MLB | 1993 | 9 |
| Stolen Bases | MLB | 1993 | 13 |
| Runs Batted In | MLB | 1993 | 70 |
| Home Runs | MLB | 1993 | 19 |
| Triples | MLB | 1993 | 0 |
| Doubles | MLB | 1993 | 21 |
| Hits | MLB | 1993 | 136 |
| Runs Scored | MLB | 1993 | 78 |
| At Bats | MLB | 1993 | 515 |
| Plate Appearances | MLB | 1993 | 582 |
| Games Played | MLB | 1993 | 153 |
| Wins Above Replacement for position players | MLB | 1993 | 0.8 |
| Positions Played | MLB | 1992 | 3/DH7 |
| Intentional Bases on Balls | MLB | 1992 | 1 |
| Sacrifice Flies | MLB | 1992 | 4 |
| Sacrifice Hits | MLB | 1992 | 1 |
| Times Hit by a Pitch | MLB | 1992 | 2 |
| GIDP | MLB | 1992 | 1 |
| Total Bases | MLB | 1992 | 41 |
| Rbat+ | MLB | 1992 | 64 |
| rOBA | MLB | 1992 | .299 |
| OPS+ | MLB | 1992 | 70 |
| OPS | MLB | 1992 | .600 |
| SLG | MLB | 1992 | .308 |
| OBP | MLB | 1992 | .291 |
| Hits/At Bats | MLB | 1992 | .226 |
| Strikeouts | MLB | 1992 | 30 |
| Bases on Balls/Walks | MLB | 1992 | 12 |
| Caught Stealing | MLB | 1992 | 0 |
| Stolen Bases | MLB | 1992 | 10 |
| Runs Batted In | MLB | 1992 | 10 |
| Home Runs | MLB | 1992 | 2 |
| Triples | MLB | 1992 | 1 |
| Doubles | MLB | 1992 | 3 |
| Hits | MLB | 1992 | 30 |
| Runs Scored | MLB | 1992 | 17 |
| At Bats | MLB | 1992 | 133 |
| Plate Appearances | MLB | 1992 | 152 |
| Games Played | MLB | 1992 | 47 |
| Wins Above Replacement for position players | MLB | 1992 | 0.0 |