[D’backs.com] Locastro plays hero as D-backs rally, stun Mets - How fun is Tim Locastro to watch? I’ve always had an affinity for baseball players with elite speed, and he is one of those players. What has made Tim such a tremendous baseball player this season is his highly respectable .473 on base percentage. He is producing opportunities to showcase his elite speed and making the most of it. He currently tops all of MLB with a sprint speed of 30.4 ft/sec. If he can continue to find ways to reach base, he deserves to stick around as a reserve outfielder.