No. Apparently everything will blow up (oops, spoiler!). The "What if?" site is by Randall Munroe (who's behind http://xkcd.com/, which is extremely popular). Randall used to work for NASA and has a physics degree. His comic caught much attention and I always see xkcd comics being posted by some friends of mine from time to time (some pretty awesome physics jokes too!). Anyways, in this specific "What if?" Randall covers the hypoethetical scenario (or is it??) of what happens to the batter and the pitcher if the ball suddenly starts to travel at the speed of light. This is fun, especially since I am playing softball these days and cannot help but keep reading.
An intro to this "What if?" question can be found on this Discover Magazine coverage: http://blogs.discovermagazine.com/discoblog/2012/07/12/one-relativistic-pitch-would-liven-up-a-baseball-game-and-destroy-it/