But later that night Aroldis Chapman, a 22-year-old Cuban defector pitching for the Cincinnati Reds' triple-A affiliate in Louisville, captured baseball fans' attention when he threw a pitch clocked at 105 mph. Chapman's pitch was one of the fastest ever recorded; one that pushed his body to the limit of human ability. And while athletes in other sports, like Usain Bolt in the 100-meter sprint, continue to rewrite the record books, don't expect pitchers to throw any faster than Chapman.