Since his first full season in 2006, Felix Hernandez has been one of baseball's best pitchers. He's accumulated 34.5 fWAR, which puts him behind only Justin Verlander, C.C. Sabathia, and Roy Halladay. You can also find Hernandez's name near the top of the list in most every other meaningful statistical category, where he pops up alongside those three greats and others such as Cliff Lee, Tim Lincecum, Dan Haren, Zack Greinke, and so on.
But there is a difference between Hernandez and those other aces: Hernandez has been left to waste his dominance as a member of a series of truly miserable Mariners teams. Toronto sent Halladay to join the world-beating Phillies; Haren escaped the Arizona desert to team up with Jered Weaver in Los Angeles; Sabathia left Cleveland before it was the cool thing to do; and Cliff Lee, well, he seems to jump between title contenders each year. All of those pitchers got their chance to pitch big games, and all of them made their bones as big-game pitchers because of it. (Those reputations have a way of outstripping reality.)