On August 15,2012, Hernandez threw the first perfect game in Mariners history and 23rd in Major League Baseball history against the Tampa Bay Rays, with 12 strikeouts in a 1-0 victory.
Hernandez threw the first perfect game in Mariners history and 23rd in Major League Baseball history against the Tampa Bay Rays. This was with 12 strikeouts in a 1-0 victory. This was on August 15,2012.