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 against 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.
Astros 
Rangers 
Angels 
WSH 
MIN 
Phillies 
Mets 
Cubs 
Cardinals 
Dodgers 
Padres 
Yankees 
Rays 
Tigers 
MIL 
CLE 
CWS 
CIN 
TOR 
PIT 
ATL 
AZ 
MIA 
BAL 
KCR 
