Has success gone to Yermín Mercedes' head? It decidedly has -- but not in a bad way.

Obviously taken by his nickname, The Yermínator -- and who could blame him? -- the 28-year-old rookie sensation had it faded into the side of his haircut. Of course, the moniker (and its namesake) have already made quite the impact; Mercedes shares a nickname with a hamburger at a local eatery, which he has already sampled.

If Mercedes keeps up his walk-off heroics, the Yermínator might just end up a household nickname on the South Side.