Julio Mateo
| Date | Team | Opponent | Result | IP | H | R | ER | BB | SO | PA | 2B | 3B | HR | GO | FO | MISC |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2003-04-01 | SEA | @ OAK | L, 5-0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 1 | 2 | RP |
| 2003-04-02 | SEA | @ OAK | L, 8-3 | 2.2 | 2 | 0 | 0 | 2 | 1 | 12 | 0 | 0 | 0 | 2 | 5 | RP |
| 2003-04-05 | SEA | @ TEX | L, 8-4 | 1.0 | 3 | 2 | 2 | 0 | 0 | 6 | 1 | 0 | 1 | 1 | 2 | RP |
| 2003-04-09 | SEA | vs. ANA | L, 5-1 | 1.0 | 1 | 1 | 1 | 0 | 2 | 4 | 0 | 0 | 1 | 0 | 1 | RP |
| 2003-04-11 | SEA | vs. TEX | L, 4-2 | 1.1 | 1 | 0 | 0 | 0 | 1 | 5 | 0 | 0 | 0 | 0 | 3 | RP |
| 2003-04-13 | SEA | vs. TEX | W, 4-3 | 2.0 | 2 | 0 | 0 | 1 | 3 | 9 | 0 | 0 | 0 | 1 | 2 | RP |
| 2003-04-25 | SEA | vs. DET | W, 6-0 | 2.2 | 0 | 0 | 0 | 1 | 4 | 9 | 0 | 0 | 0 | 1 | 3 | RP |
| 2003-04-30 | SEA | @ NYY | L, 8-5 | 1.0 | 1 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 3 | 0 | RP |
| 2003-05-03 | SEA | @ CHW | W, 12-2 | 2.0 | 1 | 0 | 0 | 1 | 2 | 8 | 0 | 0 | 0 | 2 | 2 | RP |
| 2003-05-07 | SEA | vs. NYY | L, 7-2 | 1.0 | 2 | 2 | 2 | 0 | 1 | 6 | 0 | 0 | 1 | 0 | 2 | RP |
| 2003-05-08 | SEA | vs. NYY | L, 16-5 | 3.1 | 6 | 3 | 3 | 0 | 0 | 16 | 1 | 0 | 1 | 4 | 6 | RP |
| 2003-05-14 | SEA | @ CLE | L, 7-2 | 1.0 | 1 | 0 | 0 | 0 | 2 | 4 | 0 | 0 | 0 | 0 | 1 | RP |
| 2003-05-15 | SEA | @ CLE | W, 9-1 | 1.0 | 1 | 1 | 1 | 0 | 1 | 4 | 0 | 0 | 1 | 0 | 2 | RP |
| 2003-05-21 | SEA | vs. KCR | L, 14-5 | 1.0 | 2 | 3 | 3 | 1 | 0 | 6 | 0 | 0 | 1 | 1 | 2 | RP |
| 2003-05-24 | SEA | vs. MIN | L, 7-2 | 4.0 | 2 | 1 | 1 | 2 | 4 | 16 | 0 | 0 | 1 | 2 | 6 | RP |
| 2003-06-05 | SEA | @ PHI | W, 5-4 | 2.0 | 1 | 0 | 0 | 0 | 2 | 7 | 0 | 0 | 0 | 0 | 4 | RP, W |
| 2003-06-14 | SEA | vs. ATL | L, 3-1 | 0.1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | RP |
| 2003-06-25 | SEA | @ ANA | L, 6-3 | 2.1 | 2 | 0 | 0 | 0 | 1 | 8 | 0 | 0 | 0 | 1 | 4 | RP |
| 2003-06-28 | SEA | vs. SDP | L, 6-0 | 1.0 | 1 | 0 | 0 | 1 | 1 | 5 | 0 | 0 | 0 | 0 | 2 | RP |
| 2003-06-29 | SEA | vs. SDP | L, 8-6 | 0.1 | 2 | 1 | 1 | 0 | 0 | 3 | 0 | 0 | 0 | 1 | 0 | RP |
| 2003-07-02 | SEA | @ OAK | W, 13-0 | 1.0 | 0 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 3 | RP |
| 2003-07-04 | SEA | @ TEX | L, 7-3 | 1.2 | 1 | 0 | 0 | 0 | 1 | 7 | 0 | 0 | 0 | 2 | 2 | RP |
| 2003-07-06 | SEA | @ TEX | L, 5-1 | 2.0 | 0 | 0 | 0 | 0 | 2 | 7 | 0 | 0 | 0 | 0 | 4 | RP |
| 2003-07-09 | SEA | vs. BAL | L, 7-2 | 2.0 | 3 | 1 | 1 | 0 | 2 | 8 | 0 | 0 | 0 | 1 | 2 | RP |
| 2003-07-12 | SEA | vs. TBD | L, 6-5 | 3.0 | 1 | 1 | 1 | 0 | 6 | 10 | 0 | 0 | 1 | 1 | 2 | RP |
| 2003-07-17 | SEA | @ KCR | L, 7-1 | 0.2 | 1 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 0 | 2 | RP |
| 2003-07-19 | SEA | @ KCR | L, 5-1 | 1.0 | 2 | 0 | 0 | 0 | 1 | 5 | 1 | 0 | 0 | 1 | 1 | RP |
| 2003-07-22 | SEA | @ MIN | W, 10-8 | 4.1 | 3 | 1 | 1 | 0 | 3 | 15 | 0 | 0 | 1 | 3 | 6 | RP, W |
| 2003-07-27 | SEA | vs. TEX | L, 7-3 | 1.0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 0 | 0 | 0 | 2 | RP |
| 2003-07-29 | SEA | vs. DET | W, 11-5 | 2.0 | 1 | 1 | 1 | 0 | 1 | 7 | 0 | 0 | 1 | 3 | 2 | RP |
| 2003-08-01 | SEA | vs. CHW | L, 12-1 | 5.1 | 2 | 1 | 1 | 1 | 8 | 19 | 0 | 0 | 1 | 3 | 5 | RP |
| 2003-08-06 | SEA | @ CLE | L, 10-6 | 2.0 | 1 | 0 | 0 | 0 | 2 | 7 | 0 | 0 | 0 | 4 | 0 | RP |
| 2003-08-07 | SEA | @ CLE | L, 3-0 | 1.1 | 1 | 1 | 0 | 0 | 1 | 5 | 0 | 0 | 0 | 1 | 2 | RP |
| 2003-08-10 | SEA | @ NYY | W, 8-6 | 0.1 | 1 | 1 | 1 | 0 | 0 | 2 | 1 | 0 | 0 | 1 | 0 | RP |
| 2003-08-13 | SEA | vs. TOR | W, 13-6 | 3.1 | 1 | 0 | 0 | 0 | 4 | 10 | 0 | 0 | 0 | 2 | 3 | RP, W |
| 2003-08-15 | SEA | vs. BOS | W, 10-5 | 0.1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | RP, W |
| 2003-08-19 | SEA | @ TOR | W, 9-1 | 1.0 | 0 | 0 | 0 | 0 | 2 | 3 | 0 | 0 | 0 | 1 | 0 | RP |
| 2003-08-20 | SEA | @ TOR | L, 5-2 | 1.0 | 0 | 0 | 0 | 1 | 2 | 4 | 0 | 0 | 0 | 0 | 1 | RP |
| 2003-08-22 | SEA | @ BOS | L, 6-4 | 2.1 | 1 | 1 | 1 | 0 | 2 | 8 | 0 | 0 | 1 | 1 | 4 | RP |
| 2003-08-24 | SEA | @ BOS | L, 6-1 | 2.0 | 0 | 0 | 0 | 0 | 1 | 6 | 0 | 0 | 0 | 2 | 3 | RP |
| 2003-08-27 | SEA | vs. TBD | L, 8-4 | 2.0 | 4 | 3 | 2 | 1 | 0 | 12 | 2 | 0 | 0 | 2 | 4 | RP |
| 2003-08-30 | SEA | vs. BAL | W, 13-1 | 1.0 | 0 | 0 | 0 | 0 | 1 | 3 | 0 | 0 | 0 | 0 | 2 | RP |
| 2003-09-05 | SEA | @ BAL | W, 6-4 | 1.0 | 1 | 0 | 0 | 0 | 0 | 4 | 0 | 0 | 0 | 0 | 3 | RP |
| 2003-09-06 | SEA | @ BAL | L, 3-1 | 1.0 | 2 | 1 | 1 | 0 | 1 | 5 | 0 | 0 | 1 | 0 | 1 | RP |
| 2003-09-09 | SEA | vs. TEX | L, 5-4 | 0.1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | RP |
| 2003-09-14 | SEA | vs. ANA | L, 2-1 | 1.0 | 0 | 0 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 1 | 2 | RP |
| 2003-09-16 | SEA | @ TEX | L, 10-5 | 1.2 | 3 | 1 | 1 | 0 | 2 | 8 | 0 | 0 | 0 | 1 | 2 | RP |
| 2003-09-18 | SEA | @ TEX | L, 2-1 | 1.2 | 2 | 1 | 1 | 0 | 0 | 7 | 0 | 0 | 1 | 3 | 2 | RP |
| 2003-09-21 | SEA | @ OAK | L, 12-0 | 3.1 | 6 | 4 | 4 | 1 | 0 | 16 | 3 | 0 | 0 | 1 | 7 | RP |
| 2003-09-26 | SEA | vs. OAK | W, 9-3 | 3.0 | 1 | 0 | 0 | 0 | 3 | 9 | 0 | 0 | 0 | 1 | 4 | RP, SV |
| Total Games: 50 | ||||||||||||||||