Everyone already knew that Royals rookie Yordano Ventura throws incredibly hard, but his 2014 debut last night was on a whole different level.

Ventura–who won’t be 23 years old until June–tossed six innings of shutout, two-hit ball against the Rays and, according to MLB.com’s PitchFX system, topped out at 102.9 miles per hour with his fastball.

That’s some Aroldis Chapman territory, which is rarefied air for a starter, and PitchFX also says Ventura averaged 99.5 mph on 45 total fastballs last night. Last season, during an impressive three-start debut for the Royals, his fastball averaged 97.5 mph. So maybe he’s throwing even harder now. [Drool.]