East Peoria pitcher throws fastest pitch ever by a fan at White Sox game

PEORIA — East Peoria High School pitcher RJ Duncheon tossed a complete-game, 12-strikeout victory on the field Monday, May 11. But it's two pitches he threw at a Chicago White Sox game that has gathered major-league attention for the Illinois State University commit. Duncheon was at the May 9 White Sox game against the Mariners in Rate Field when he spotted a radar gun in a pitching booth set up for fans in the concourse.

Of course, he had to try it. He fired a pitch that registered at 97 mph and was declared by the White Sox as a record for fastest pitch thrown by a fan there. Duncheon wasn't done.

Without his coaches knowing, he showed up at the pitching booth again and beat his own record, throwing a pitch 98 mph. Actually, RJ was keeping this video from his coaches as he wasn’t supposed to go back and beat his record. Oh well, he threw a complete game Monday anyway.

pic. twitter. com/3LVSm738Nk — East Peoria HS Baseball (@raider_ep) May 14, 2026 Both record pitches have appeared on video on X, the social media site formerly known as Twitter.