Felix Hernandez had a record of 8-4 with an ERA of 2.57 and 117 strikeouts in 16 appearances in the month of April versus the Oakland Athletics in his career.
| NAME | DATE | TM | OPP | DEC | GS | ERA | SO | CG | SHO | SV | IP | H | ER | R | HR | BB | HBP | GF | IBB | TBF | WP | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  | F. Hernandez | 4/7/2006 |  SEA | vs |  OAK | L | 1 | 1.80 | 4 | 0 | 0 | 0 | 5.0 | 2 | 1 | 1 | 0 | 4 | 1 | 0 | 0 | 21 | 0 |
| 2 | | F. Hernandez | 4/2/2007 | SEA | vs | OAK | W | 1 | 0.00 | 12 | 0 | 0 | 0 | 8.0 | 3 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 29 | 0 |
| 3 | | F. Hernandez | 4/16/2008 | SEA | @ | OAK | W | 1 | 1.00 | 8 | 1 | 0 | 0 | 9.0 | 8 | 1 | 2 | 0 | 1 | 0 | 0 | 0 | 34 | 0 |
| 4 | | F. Hernandez | 4/27/2008 | SEA | vs | OAK | L | 1 | 5.14 | 10 | 0 | 0 | 0 | 7.0 | 6 | 4 | 4 | 0 | 4 | 0 | 0 | 0 | 30 | 0 |
| 5 | | F. Hernandez | 4/11/2009 | SEA | @ | OAK | 1 | 9.00 | 8 | 0 | 0 | 0 | 5.0 | 7 | 5 | 5 | 1 | 2 | 1 | 0 | 0 | 25 | 1 | |
| 6 | | F. Hernandez | 4/5/2010 | SEA | @ | OAK | 1 | 4.05 | 4 | 0 | 0 | 0 | 6.2 | 3 | 3 | 3 | 0 | 6 | 0 | 0 | 0 | 26 | 1 | |
| 7 | | F. Hernandez | 4/1/2011 | SEA | @ | OAK | W | 1 | 2.00 | 5 | 1 | 0 | 0 | 9.0 | 5 | 2 | 2 | 1 | 0 | 0 | 0 | 0 | 30 | 0 |
| 8 | | F. Hernandez | 4/21/2011 | SEA | vs | OAK | W | 1 | 0.00 | 8 | 0 | 0 | 0 | 7.2 | 4 | 0 | 0 | 0 | 3 | 0 | 0 | 0 | 29 | 0 |
| 9 | | F. Hernandez | 4/7/2012 | SEA | @ | OAK | W | 1 | 8.53 | 7 | 0 | 0 | 0 | 6.1 | 8 | 6 | 6 | 1 | 1 | 1 | 0 | 0 | 29 | 1 |
| 10 | | F. Hernandez | 4/13/2012 | SEA | vs | OAK | L | 1 | 2.57 | 6 | 0 | 0 | 0 | 7.0 | 7 | 2 | 2 | 0 | 3 | 0 | 0 | 0 | 29 | 0 |
| 11 | | F. Hernandez | 4/1/2013 | SEA | @ | OAK | W | 1 | 0.00 | 8 | 0 | 0 | 0 | 7.2 | 3 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 27 | 0 |
| 12 | | F. Hernandez | 4/5/2014 | SEA | @ | OAK | W | 1 | 1.08 | 8 | 0 | 0 | 0 | 8.1 | 6 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 32 | 1 |
| 13 | | F. Hernandez | 4/11/2014 | SEA | vs | OAK | W | 1 | 2.57 | 11 | 0 | 0 | 0 | 7.0 | 4 | 2 | 2 | 0 | 0 | 1 | 0 | 0 | 27 | 0 |
| 14 | | F. Hernandez | 4/12/2015 | SEA | @ | OAK | 1 | 5.40 | 1 | 0 | 0 | 0 | 5.0 | 8 | 3 | 3 | 0 | 2 | 0 | 0 | 0 | 23 | 0 | |
| 15 | | F. Hernandez | 4/10/2016 | SEA | vs | OAK | 1 | 0.00 | 10 | 0 | 0 | 0 | 7.0 | 3 | 0 | 0 | 0 | 2 | 0 | 0 | 0 | 26 | 0 | |
| 16 | | F. Hernandez | 4/15/2018 | SEA | vs | OAK | L | 1 | 2.84 | 7 | 0 | 0 | 0 | 6.1 | 5 | 2 | 2 | 1 | 0 | 2 | 0 | 0 | 26 | 0 |
| Total | 16 | 2.57 | 117 | 2 | 0 | 0 | 112.0 | 82 | 32 | 33 | 5 | 32 | 6 | 0 | 0 | 443 | 4 |
Some of the information used here was obtained free of charge from Retrosheet.
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