Watch Stephen Strasburg throw one of the filthiest changeups ever to destroy Ben Zobrist Nationals pitcher Stephen Strasburg has long had one of the best changeups the MLB world has ever witnessed. Its a big part of why he was so successful when he first entered the league, as combined with his-then 100 mph fastball, he was virtually unhittable when healthy. Some questioned if hed be able to have the same filthy changeup pitching out of the stretch. Ben Zobrist learned that lesson during Game 4 of the National League Division Series on Wednesday night, when Strasburg made him look silly with that very pitch. To a hitter, it looks like a fastball, and then just drops right out of the zone and tails away.