A Brewers ballboy got dirty to make a sliding stop on a foul ball

Of the players on a baseball field during a game, the ballboys and ballgirls are the least equipped to make spectacular defensive plays. Nevertheless, they seem to do so with at least some regularity.
Sure, the ballboy often sits, letting his muscles tighten up ... but during the second inning of the Cubs' 4-2 win, the Brewers' ballboy along the first-base line displayed that a proper warmup may not always be necessary to showcase defensive range, as long as you're willing to get a bit dirty.

A dirt-stained leg and a slight limp is a small price to play for fan service. At least that's what Brew Crew No. 99 would likely say.