From ABC:
The Mariners’ ace and former AL Cy Young Award winner has long talked of his desire to achieve pitching perfection. He finally accomplished it against the Rays, striking out the side twice and finishing with 12 strikeouts.It was the third perfect game in baseball this season, joining gems by Chicago’s Philip Humber against the Mariners in April and San Francisco’s Matt Cain against Houston in June.

“I don’t have any words to explain this,” Hernandez said to the crowd, speaking on the field after the final out. “I’ve been working so hard to throw one and today is for you guys.”