John Timothy Flaherty (born October 21, 1967) is an American television baseball broadcaster and a former professional baseball catcher. He played for the Boston Red Sox, Detroit Tigers, San Diego Padres, Tampa Bay Devil Rays, and New York Yankees of Major League Baseball between 1992 and 2005. He is currently a broadcaster for the YES Network.
Early life
Flaherty grew up in West Nyack, New York and graduated in 1985 from Saint Joseph Regional High School in Montvale, New Jersey. He went to grammar school at St. Anthony School in Nanuet, New York. He attended George Washington University, graduating in 1990 with a BA in Speech Communications and a minor in Psychology. He batted and threw right-handed. In 1987, he played collegiate summer baseball with the Harwich Mariners of the Cape Cod Baseball League.

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| Positions Played | MLB | 2005 | 2/3H |
| Intentional Bases on Balls | MLB | 2005 | 0 |
| Sacrifice Flies | MLB | 2005 | 2 |
| Sacrifice Hits | MLB | 2005 | 2 |
| Times Hit by a Pitch | MLB | 2005 | 1 |
| GIDP | MLB | 2005 | 4 |
| Total Bases | MLB | 2005 | 32 |
| Rbat+ | MLB | 2005 | 25 |
| rOBA | MLB | 2005 | .230 |
| OPS+ | MLB | 2005 | 23 |
| OPS | MLB | 2005 | .458 |
| SLG | MLB | 2005 | .252 |
| OBP | MLB | 2005 | .206 |
| Hits/At Bats | MLB | 2005 | .165 |
| Strikeouts | MLB | 2005 | 26 |
| Bases on Balls/Walks | MLB | 2005 | 6 |
| Caught Stealing | MLB | 2005 | 0 |
| Stolen Bases | MLB | 2005 | 0 |
| Runs Batted In | MLB | 2005 | 11 |
| Home Runs | MLB | 2005 | 2 |
| Triples | MLB | 2005 | 0 |
| Doubles | MLB | 2005 | 5 |
| Hits | MLB | 2005 | 21 |
| Runs Scored | MLB | 2005 | 10 |
| At Bats | MLB | 2005 | 127 |
| Plate Appearances | MLB | 2005 | 138 |
| Games Played | MLB | 2005 | 47 |
| Wins Above Replacement for position players | MLB | 2005 | -0.5 |
|
|
| Positions Played | MLB | 2004 | 2/H |
| Intentional Bases on Balls | MLB | 2004 | 2 |
| Sacrifice Flies | MLB | 2004 | 0 |
| Sacrifice Hits | MLB | 2004 | 2 |
| Times Hit by a Pitch | MLB | 2004 | 1 |
| GIDP | MLB | 2004 | 5 |
| Total Bases | MLB | 2004 | 59 |
| Rbat+ | MLB | 2004 | 90 |
| rOBA | MLB | 2004 | .320 |
| OPS+ | MLB | 2004 | 93 |
| OPS | MLB | 2004 | .750 |
| SLG | MLB | 2004 | .465 |
| OBP | MLB | 2004 | .286 |
| Hits/At Bats | MLB | 2004 | .252 |
| Strikeouts | MLB | 2004 | 25 |
| Bases on Balls/Walks | MLB | 2004 | 5 |
| Caught Stealing | MLB | 2004 | 2 |
| Stolen Bases | MLB | 2004 | 0 |
| Runs Batted In | MLB | 2004 | 16 |
| Home Runs | MLB | 2004 | 6 |
| Triples | MLB | 2004 | 0 |
| Doubles | MLB | 2004 | 9 |
| Hits | MLB | 2004 | 32 |
| Runs Scored | MLB | 2004 | 11 |
| At Bats | MLB | 2004 | 127 |
| Plate Appearances | MLB | 2004 | 135 |
| Games Played | MLB | 2004 | 47 |
| Wins Above Replacement for position players | MLB | 2004 | -0.1 |
|
|
| Positions Played | MLB | 2003 | 2/H |
| Intentional Bases on Balls | MLB | 2003 | 1 |
| Sacrifice Flies | MLB | 2003 | 1 |
| Sacrifice Hits | MLB | 2003 | 5 |
| Times Hit by a Pitch | MLB | 2003 | 1 |
| GIDP | MLB | 2003 | 6 |
| Total Bases | MLB | 2003 | 48 |
| Rbat+ | MLB | 2003 | 109 |
| rOBA | MLB | 2003 | .349 |
| OPS+ | MLB | 2003 | 97 |
| OPS | MLB | 2003 | .754 |
| SLG | MLB | 2003 | .457 |
| OBP | MLB | 2003 | .297 |
| Hits/At Bats | MLB | 2003 | .267 |
| Strikeouts | MLB | 2003 | 19 |
| Bases on Balls/Walks | MLB | 2003 | 4 |
| Caught Stealing | MLB | 2003 | 0 |
| Stolen Bases | MLB | 2003 | 0 |
| Runs Batted In | MLB | 2003 | 14 |
| Home Runs | MLB | 2003 | 4 |
| Triples | MLB | 2003 | 0 |
| Doubles | MLB | 2003 | 8 |
| Hits | MLB | 2003 | 28 |
| Runs Scored | MLB | 2003 | 16 |
| At Bats | MLB | 2003 | 105 |
| Plate Appearances | MLB | 2003 | 116 |
| Games Played | MLB | 2003 | 40 |
| Wins Above Replacement for position players | MLB | 2003 | 0.6 |
|
|
| Positions Played | MLB | 2002 | 2/H |
| Intentional Bases on Balls | MLB | 2002 | 0 |
| Sacrifice Flies | MLB | 2002 | 4 |
| Sacrifice Hits | MLB | 2002 | 2 |
| Times Hit by a Pitch | MLB | 2002 | 1 |
| GIDP | MLB | 2002 | 6 |
| Total Bases | MLB | 2002 | 105 |
| Rbat+ | MLB | 2002 | 76 |
| rOBA | MLB | 2002 | .297 |
| OPS+ | MLB | 2002 | 79 |
| OPS | MLB | 2002 | .669 |
| SLG | MLB | 2002 | .374 |
| OBP | MLB | 2002 | .296 |
| Hits/At Bats | MLB | 2002 | .260 |
| Strikeouts | MLB | 2002 | 50 |
| Bases on Balls/Walks | MLB | 2002 | 15 |
| Caught Stealing | MLB | 2002 | 2 |
| Stolen Bases | MLB | 2002 | 2 |
| Runs Batted In | MLB | 2002 | 33 |
| Home Runs | MLB | 2002 | 4 |
| Triples | MLB | 2002 | 0 |
| Doubles | MLB | 2002 | 20 |
| Hits | MLB | 2002 | 73 |
| Runs Scored | MLB | 2002 | 27 |
| At Bats | MLB | 2002 | 281 |
| Plate Appearances | MLB | 2002 | 303 |
| Games Played | MLB | 2002 | 76 |
| Wins Above Replacement for position players | MLB | 2002 | 0.7 |
|
|
| Positions Played | MLB | 2001 | 2 |
| Intentional Bases on Balls | MLB | 2001 | 1 |
| Sacrifice Flies | MLB | 2001 | 1 |
| Sacrifice Hits | MLB | 2001 | 5 |
| Times Hit by a Pitch | MLB | 2001 | 1 |
| GIDP | MLB | 2001 | 9 |
| Total Bases | MLB | 2001 | 90 |
| Rbat+ | MLB | 2001 | 57 |
| rOBA | MLB | 2001 | .277 |
| OPS+ | MLB | 2001 | 67 |
| OPS | MLB | 2001 | .632 |
| SLG | MLB | 2001 | .363 |
| OBP | MLB | 2001 | .269 |
| Hits/At Bats | MLB | 2001 | .238 |
| Strikeouts | MLB | 2001 | 33 |
| Bases on Balls/Walks | MLB | 2001 | 10 |
| Caught Stealing | MLB | 2001 | 0 |
| Stolen Bases | MLB | 2001 | 1 |
| Runs Batted In | MLB | 2001 | 29 |
| Home Runs | MLB | 2001 | 4 |
| Triples | MLB | 2001 | 1 |
| Doubles | MLB | 2001 | 17 |
| Hits | MLB | 2001 | 59 |
| Runs Scored | MLB | 2001 | 20 |
| At Bats | MLB | 2001 | 248 |
| Plate Appearances | MLB | 2001 | 265 |
| Games Played | MLB | 2001 | 78 |
| Wins Above Replacement for position players | MLB | 2001 | -0.9 |
|
|
| Positions Played | MLB | 2000 | *2/H |
| Intentional Bases on Balls | MLB | 2000 | 2 |
| Sacrifice Flies | MLB | 2000 | 2 |
| Sacrifice Hits | MLB | 2000 | 2 |
| Times Hit by a Pitch | MLB | 2000 | 0 |
| GIDP | MLB | 2000 | 11 |
| Total Bases | MLB | 2000 | 148 |
| Rbat+ | MLB | 2000 | 60 |
| rOBA | MLB | 2000 | .296 |
| OPS+ | MLB | 2000 | 71 |
| OPS | MLB | 2000 | .671 |
| SLG | MLB | 2000 | .376 |
| OBP | MLB | 2000 | .296 |
| Hits/At Bats | MLB | 2000 | .261 |
| Strikeouts | MLB | 2000 | 57 |
| Bases on Balls/Walks | MLB | 2000 | 20 |
| Caught Stealing | MLB | 2000 | 0 |
| Stolen Bases | MLB | 2000 | 0 |
| Runs Batted In | MLB | 2000 | 39 |
| Home Runs | MLB | 2000 | 10 |
| Triples | MLB | 2000 | 0 |
| Doubles | MLB | 2000 | 15 |
| Hits | MLB | 2000 | 103 |
| Runs Scored | MLB | 2000 | 36 |
| At Bats | MLB | 2000 | 394 |
| Plate Appearances | MLB | 2000 | 418 |
| Games Played | MLB | 2000 | 109 |
| Wins Above Replacement for position players | MLB | 2000 | -0.5 |
|
|
| Positions Played | MLB | 1999 | *2/DH |
| Intentional Bases on Balls | MLB | 1999 | 0 |
| Sacrifice Flies | MLB | 1999 | 10 |
| Sacrifice Hits | MLB | 1999 | 1 |
| Times Hit by a Pitch | MLB | 1999 | 6 |
| GIDP | MLB | 1999 | 14 |
| Total Bases | MLB | 1999 | 185 |
| Rbat+ | MLB | 1999 | 77 |
| rOBA | MLB | 1999 | .319 |
| OPS+ | MLB | 1999 | 83 |
| OPS | MLB | 1999 | .725 |
| SLG | MLB | 1999 | .415 |
| OBP | MLB | 1999 | .310 |
| Hits/At Bats | MLB | 1999 | .278 |
| Strikeouts | MLB | 1999 | 64 |
| Bases on Balls/Walks | MLB | 1999 | 19 |
| Caught Stealing | MLB | 1999 | 2 |
| Stolen Bases | MLB | 1999 | 0 |
| Runs Batted In | MLB | 1999 | 71 |
| Home Runs | MLB | 1999 | 14 |
| Triples | MLB | 1999 | 0 |
| Doubles | MLB | 1999 | 19 |
| Hits | MLB | 1999 | 124 |
| Runs Scored | MLB | 1999 | 53 |
| At Bats | MLB | 1999 | 446 |
| Plate Appearances | MLB | 1999 | 482 |
| Games Played | MLB | 1999 | 117 |
| Wins Above Replacement for position players | MLB | 1999 | 1.7 |
|
|
| Positions Played | MLB | 1998 | 2 |
| Intentional Bases on Balls | MLB | 1998 | 0 |
| Sacrifice Flies | MLB | 1998 | 3 |
| Sacrifice Hits | MLB | 1998 | 4 |
| Times Hit by a Pitch | MLB | 1998 | 1 |
| GIDP | MLB | 1998 | 9 |
| Total Bases | MLB | 1998 | 83 |
| Rbat+ | MLB | 1998 | 34 |
| rOBA | MLB | 1998 | .247 |
| OPS+ | MLB | 1998 | 39 |
| OPS | MLB | 1998 | .534 |
| SLG | MLB | 1998 | .273 |
| OBP | MLB | 1998 | .261 |
| Hits/At Bats | MLB | 1998 | .207 |
| Strikeouts | MLB | 1998 | 46 |
| Bases on Balls/Walks | MLB | 1998 | 22 |
| Caught Stealing | MLB | 1998 | 5 |
| Stolen Bases | MLB | 1998 | 0 |
| Runs Batted In | MLB | 1998 | 24 |
| Home Runs | MLB | 1998 | 3 |
| Triples | MLB | 1998 | 0 |
| Doubles | MLB | 1998 | 11 |
| Hits | MLB | 1998 | 63 |
| Runs Scored | MLB | 1998 | 21 |
| At Bats | MLB | 1998 | 304 |
| Plate Appearances | MLB | 1998 | 334 |
| Games Played | MLB | 1998 | 91 |
| Wins Above Replacement for position players | MLB | 1998 | -0.7 |
|
|
| Positions Played | MLB | 1996 | 2/H |
| Intentional Bases on Balls | MLB | 1996 | 1 |
| Sacrifice Flies | MLB | 1996 | 1 |
| Sacrifice Hits | MLB | 1996 | 3 |
| Times Hit by a Pitch | MLB | 1996 | 1 |
| GIDP | MLB | 1996 | 5 |
| Total Bases | MLB | 1996 | 62 |
| Rbat+ | MLB | 1996 | 73 |
| rOBA | MLB | 1996 | .319 |
| OPS+ | MLB | 1996 | 74 |
| OPS | MLB | 1996 | .698 |
| SLG | MLB | 1996 | .408 |
| OBP | MLB | 1996 | .290 |
| Hits/At Bats | MLB | 1996 | .250 |
| Strikeouts | MLB | 1996 | 25 |
| Bases on Balls/Walks | MLB | 1996 | 8 |
| Caught Stealing | MLB | 1996 | 0 |
| Stolen Bases | MLB | 1996 | 1 |
| Runs Batted In | MLB | 1996 | 23 |
| Home Runs | MLB | 1996 | 4 |
| Triples | MLB | 1996 | 0 |
| Doubles | MLB | 1996 | 12 |
| Hits | MLB | 1996 | 38 |
| Runs Scored | MLB | 1996 | 18 |
| At Bats | MLB | 1996 | 152 |
| Plate Appearances | MLB | 1996 | 165 |
| Games Played | MLB | 1996 | 47 |
| Wins Above Replacement for position players | MLB | 1996 | 0.2 |
|
|
| Positions Played | MLB | 1995 | *2/H |
| Intentional Bases on Balls | MLB | 1995 | 0 |
| Sacrifice Flies | MLB | 1995 | 2 |
| Sacrifice Hits | MLB | 1995 | 8 |
| Times Hit by a Pitch | MLB | 1995 | 3 |
| GIDP | MLB | 1995 | 8 |
| Total Bases | MLB | 1995 | 143 |
| Rbat+ | MLB | 1995 | 73 |
| rOBA | MLB | 1995 | .311 |
| OPS+ | MLB | 1995 | 77 |
| OPS | MLB | 1995 | .688 |
| SLG | MLB | 1995 | .404 |
| OBP | MLB | 1995 | .284 |
| Hits/At Bats | MLB | 1995 | .243 |
| Strikeouts | MLB | 1995 | 47 |
| Bases on Balls/Walks | MLB | 1995 | 18 |
| Caught Stealing | MLB | 1995 | 0 |
| Stolen Bases | MLB | 1995 | 0 |
| Runs Batted In | MLB | 1995 | 40 |
| Home Runs | MLB | 1995 | 11 |
| Triples | MLB | 1995 | 1 |
| Doubles | MLB | 1995 | 22 |
| Hits | MLB | 1995 | 86 |
| Runs Scored | MLB | 1995 | 39 |
| At Bats | MLB | 1995 | 354 |
| Plate Appearances | MLB | 1995 | 385 |
| Games Played | MLB | 1995 | 112 |
| Wins Above Replacement for position players | MLB | 1995 | -0.1 |
|
|
| Positions Played | MLB | 1994 | 2/DH |
| Intentional Bases on Balls | MLB | 1994 | 0 |
| Sacrifice Flies | MLB | 1994 | 1 |
| Sacrifice Hits | MLB | 1994 | 2 |
| Times Hit by a Pitch | MLB | 1994 | 0 |
| GIDP | MLB | 1994 | 1 |
| Total Bases | MLB | 1994 | 7 |
| Rbat+ | MLB | 1994 | -8 |
| rOBA | MLB | 1994 | .186 |
| OPS+ | MLB | 1994 | -11 |
| OPS | MLB | 1994 | .342 |
| SLG | MLB | 1994 | .175 |
| OBP | MLB | 1994 | .167 |
| Hits/At Bats | MLB | 1994 | .150 |
| Strikeouts | MLB | 1994 | 11 |
| Bases on Balls/Walks | MLB | 1994 | 1 |
| Caught Stealing | MLB | 1994 | 1 |
| Stolen Bases | MLB | 1994 | 0 |
| Runs Batted In | MLB | 1994 | 4 |
| Home Runs | MLB | 1994 | 0 |
| Triples | MLB | 1994 | 0 |
| Doubles | MLB | 1994 | 1 |
| Hits | MLB | 1994 | 6 |
| Runs Scored | MLB | 1994 | 2 |
| At Bats | MLB | 1994 | 40 |
| Plate Appearances | MLB | 1994 | 44 |
| Games Played | MLB | 1994 | 34 |
| Wins Above Replacement for position players | MLB | 1994 | -0.4 |
|
|
| Positions Played | MLB | 1993 | 2 |
| Intentional Bases on Balls | MLB | 1993 | 0 |
| Sacrifice Flies | MLB | 1993 | 0 |
| Sacrifice Hits | MLB | 1993 | 1 |
| Times Hit by a Pitch | MLB | 1993 | 1 |
| GIDP | MLB | 1993 | 0 |
| Total Bases | MLB | 1993 | 5 |
| Rbat+ | MLB | 1993 | 17 |
| rOBA | MLB | 1993 | .236 |
| OPS+ | MLB | 1993 | 10 |
| OPS | MLB | 1993 | .414 |
| SLG | MLB | 1993 | .200 |
| OBP | MLB | 1993 | .214 |
| Hits/At Bats | MLB | 1993 | .120 |
| Strikeouts | MLB | 1993 | 6 |
| Bases on Balls/Walks | MLB | 1993 | 2 |
| Caught Stealing | MLB | 1993 | 0 |
| Stolen Bases | MLB | 1993 | 0 |
| Runs Batted In | MLB | 1993 | 2 |
| Home Runs | MLB | 1993 | 0 |
| Triples | MLB | 1993 | 0 |
| Doubles | MLB | 1993 | 2 |
| Hits | MLB | 1993 | 3 |
| Runs Scored | MLB | 1993 | 3 |
| At Bats | MLB | 1993 | 25 |
| Plate Appearances | MLB | 1993 | 29 |
| Games Played | MLB | 1993 | 13 |
| Wins Above Replacement for position players | MLB | 1993 | 0.0 |
|
|
| Positions Played | MLB | 1992 | 2/H |
| Intentional Bases on Balls | MLB | 1992 | 0 |
| Sacrifice Flies | MLB | 1992 | 1 |
| Sacrifice Hits | MLB | 1992 | 1 |
| Times Hit by a Pitch | MLB | 1992 | 0 |
| GIDP | MLB | 1992 | 0 |
| Total Bases | MLB | 1992 | 15 |
| Rbat+ | MLB | 1992 | 7 |
| rOBA | MLB | 1992 | .212 |
| OPS+ | MLB | 1992 | 26 |
| OPS | MLB | 1992 | .456 |
| SLG | MLB | 1992 | .227 |
| OBP | MLB | 1992 | .229 |
| Hits/At Bats | MLB | 1992 | .197 |
| Strikeouts | MLB | 1992 | 7 |
| Bases on Balls/Walks | MLB | 1992 | 3 |
| Caught Stealing | MLB | 1992 | 0 |
| Stolen Bases | MLB | 1992 | 0 |
| Runs Batted In | MLB | 1992 | 2 |
| Home Runs | MLB | 1992 | 0 |
| Triples | MLB | 1992 | 0 |
| Doubles | MLB | 1992 | 2 |
| Hits | MLB | 1992 | 13 |
| Runs Scored | MLB | 1992 | 3 |
| At Bats | MLB | 1992 | 66 |
| Plate Appearances | MLB | 1992 | 71 |
| Games Played | MLB | 1992 | 35 |
| Wins Above Replacement for position players | MLB | 1992 | -0.3 |
|