Félix Abraham Hernández (born April 8, 1986 in Valencia, Venezuela), nicknamed "King Félix", is a Major League Baseball starting pitcher for the Seattle Mariners.
Hernández throws a fastball that has been clocked as high as 100 mph, although he does not rely entirely on overpowering velocity. Instead he often uses a two-seam fastball, which comes in just a bit slower but with more movement and sink as it approaches the batter. His repertoire of pitches also includes a hard curve, a split-finger fastball, and a slider, all of which he can throw extremely well (he avoided the slider early in his career because the team was concerned it might injure his arm). When at his best, Hernández can induce a steady procession of groundball outs and strikeouts, with very few balls being hit in the air.
Like some other pitchers, Hernández wears a long-sleeved undershirt beneath his uniform jersey. While typically this is done to keep the pitcher's arm from getting chilled, Hernández wears it even in the hottest weather. For him it serves to keep perspiration from running down his arms and interfering with his hand's grip on the baseball.