Juan Guzman had a 10-3 record with an ERA of 2.99 and 123 strikeouts in 23 appearances in his rookie season in 1991.
Games
| NAME | DATE | SEASON | TM | OPP | DEC | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | J. Guzman | 10/5/1991 | 1991 |  TOR | @ |  MIN | L | 1 | 3.00 | 2 | 0 | 0 | 0 | 3.0 | 3 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 12 | 1 |
| 2 | | J. Guzman | 10/1/1991 | 1991 | TOR | vs |  CAL | W | 1 | 1.29 | 6 | 0 | 0 | 0 | 7.0 | 5 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 26 | 1 |
| 3 | | J. Guzman | 9/27/1991 | 1991 | TOR | vs | MIN | W | 1 | 2.25 | 9 | 0 | 0 | 0 | 8.0 | 3 | 2 | 2 | 1 | 3 | 1 | 0 | 0 | 30 | 0 |
| 4 | | J. Guzman | 9/22/1991 | 1991 | TOR | @ |  OAK | W | 1 | 0.00 | 7 | 0 | 0 | 0 | 8.0 | 2 | 0 | 2 | 0 | 4 | 0 | 0 | 0 | 30 | 1 |
| 5 | | J. Guzman | 9/17/1991 | 1991 | TOR | @ |  SEA | 1 | 4.50 | 1 | 0 | 0 | 0 | 6.0 | 8 | 3 | 3 | 0 | 3 | 0 | 0 | 0 | 28 | 0 | |
| 6 | | J. Guzman | 9/13/1991 | 1991 | TOR | vs | OAK | W | 1 | 8.53 | 10 | 0 | 0 | 0 | 6.1 | 7 | 6 | 6 | 1 | 4 | 0 | 0 | 0 | 30 | 0 |
| 7 | | J. Guzman | 9/6/1991 | 1991 | TOR | @ |  CLE | W | 1 | 0.00 | 6 | 0 | 0 | 0 | 7.0 | 2 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 25 | 0 |
| 8 | | J. Guzman | 9/1/1991 | 1991 | TOR | @ |  NYY | 1 | 1.50 | 5 | 0 | 0 | 0 | 6.0 | 5 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 24 | 1 | |
| 9 | | J. Guzman | 8/27/1991 | 1991 | TOR | @ |  BAL | W | 1 | 1.00 | 8 | 1 | 0 | 0 | 9.0 | 5 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 32 | 1 |
| 10 | | J. Guzman | 8/22/1991 | 1991 | TOR | vs |  MIL | 1 | 4.50 | 3 | 0 | 0 | 0 | 6.0 | 6 | 3 | 3 | 1 | 2 | 0 | 0 | 0 | 27 | 0 | |
| 11 | | J. Guzman | 8/17/1991 | 1991 | TOR | @ |  DET | 1 | 3.86 | 6 | 0 | 0 | 0 | 4.2 | 3 | 2 | 2 | 0 | 7 | 0 | 0 | 0 | 23 | 1 | |
| 12 | | J. Guzman | 8/12/1991 | 1991 | TOR | vs |  BOS | 1 | 9.00 | 5 | 0 | 0 | 0 | 5.0 | 8 | 5 | 5 | 0 | 3 | 0 | 0 | 0 | 26 | 2 | |
| 13 | | J. Guzman | 8/7/1991 | 1991 | TOR | vs | DET | W | 1 | 1.29 | 9 | 0 | 0 | 0 | 7.0 | 2 | 1 | 2 | 1 | 2 | 0 | 0 | 0 | 26 | 0 |
| 14 | | J. Guzman | 8/1/1991 | 1991 | TOR | vs | CLE | 1 | 9.00 | 4 | 0 | 0 | 0 | 3.0 | 3 | 3 | 4 | 0 | 6 | 1 | 0 | 0 | 19 | 0 | |
| 15 | | J. Guzman | 7/27/1991 | 1991 | TOR | vs |  KCR | 1 | 1.23 | 8 | 0 | 0 | 0 | 7.1 | 5 | 1 | 2 | 0 | 5 | 0 | 0 | 0 | 30 | 0 | |
| 16 | | J. Guzman | 7/21/1991 | 1991 | TOR | @ |  TEX | 1 | 6.00 | 4 | 0 | 0 | 0 | 6.0 | 7 | 4 | 4 | 1 | 1 | 0 | 0 | 0 | 25 | 0 | |
| 17 | | J. Guzman | 7/15/1991 | 1991 | TOR | @ | KCR | 1 | 3.60 | 5 | 0 | 0 | 0 | 5.0 | 4 | 2 | 2 | 0 | 3 | 0 | 0 | 0 | 23 | 2 | |
| 18 | | J. Guzman | 7/7/1991 | 1991 | TOR | @ | SEA | W | 1 | 1.13 | 6 | 0 | 0 | 0 | 8.0 | 3 | 1 | 1 | 0 | 3 | 0 | 0 | 0 | 29 | 0 |
| 19 | | J. Guzman | 7/2/1991 | 1991 | TOR | vs | MIN | 1 | 3.00 | 1 | 0 | 0 | 0 | 3.0 | 1 | 1 | 2 | 0 | 3 | 1 | 0 | 0 | 14 | 0 | |
| 20 | | J. Guzman | 6/27/1991 | 1991 | TOR | @ | MIN | W | 1 | 0.00 | 6 | 0 | 0 | 0 | 7.2 | 3 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 28 | 0 |
| 21 | | J. Guzman | 6/22/1991 | 1991 | TOR | vs | CLE | W | 1 | 0.00 | 6 | 0 | 0 | 0 | 7.0 | 3 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 26 | 0 |
| 22 | | J. Guzman | 6/15/1991 | 1991 | TOR | vs | BAL | L | 1 | 9.00 | 1 | 0 | 0 | 0 | 4.0 | 4 | 4 | 5 | 1 | 3 | 0 | 0 | 0 | 18 | 0 |
| 23 | | J. Guzman | 6/7/1991 | 1991 | TOR | @ | BAL | L | 1 | 7.71 | 5 | 0 | 0 | 0 | 4.2 | 6 | 4 | 4 | 0 | 3 | 0 | 0 | 0 | 23 | 0 |
| Total | 23 | 2.99 | 123 | 1 | 0 | 0 | 138.2 | 98 | 46 | 53 | 6 | 66 | 4 | 0 | 0 | 574 | 10 |
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