In his final swim of this year’s Speedo Junior National Championships, age group phenom Michael Andrew took over the National Age Group record in the 15-16 50 meter freestyle, posting a 22.34.

The old record, 22.39, previously belonged to Caeleb Dressel, who currently swims for the University of Florida.

Andrew’s time rockets him into the top 50 swims in the world this year in the event. It also moves him up 11 slots in U.S. rankings, knocking Jimmy Feigen out of the 15th spot.

Andrew came back from a slow start at the beginning of the race. His reaction time, .84, was slower than any other male swimmer in the event finals. His initial underwater breakout made up for lost hundredths by rocketing him ahead of the competition.

He hit the wall .65 ahead of his next-closest competitor, Maxime Rooney, who came in with a 22.99.

As far as LCM events, Andrew now holds records for the 15-16 100m fly, the 100m breast, and the 50m free, alongside his 11-12 records in the 50m free and 50m fly and his 13-14 records in the 50m free, 100m free, 100m back, 100m fly, and 200m IM.

In his other swim earlier tonight, Andrew moved up to 2nd in the all-time age group rankings in the 200 IM, beating out Michael Phelps’s 2:00.86 with a 2:00.59. In that event and age group, Andrew’s time is only slower than Andrew Seliskar’s 1:59.84.

The 16-year-old pro signed with Adidas Swim earlier this year.