Thomas Jefferson's Stephen Seliskar, top, gets a jump on the competition in the 100-yard freestyle. (Preston Keres/FOR THE WASHINGTON POST)

On a night where few races were won without achieving an all-American time, Oakton’s boys’ and girls’ teams outlasted the competition once again Saturday at the Virginia AAA Northern Region swimming championships at Oak Marr RECenter.

Oakton’s boys beat W.T. Woodson, 281.5-250, despite not winning a single event until the final relay of the night. The girls’ side was more decisive, with Oakton pulling away from a top-loaded West Potomac team to win, 245-190.

The Cougars were led by sophomore Janet Hu, who set two regional records in the 100-yard freestyle (49.52 seconds) and 100 backstroke (53.76 seconds), both in automatic all-American times, before delivering a come-from-behind victory in the girls’ 400 freestyle relay.

While Hu was impressive, no one could outshine the Seliskar brothers from Thomas Jefferson.

Freshman Andrew Seliskar finished with four all-American times — three automatic — and a regional record.

The first came in boys’ 200 medley relay, where he and with his brother, Stephen, delivered key legs to take first, along with teammates Reese Frerichs and Miles Oakley, in a time of 1 minute 35.01 seconds. The brothers would achieve an all-American consideration time in the 200 freestyle relay, as well.

“I didn’t expect to swim like this,” Andrew Seliskar said. “It’s really great that I get to swim alongside my brother and the rest of the team. We’re all pumped to go to states in a couple weeks and compete.”

Individually, he outpaced the field in the boys’ 200 medley, where he set a regional record of 1:50.14, and in the 100 butterfly, with an automatic all-American time of 49.71. Stephen Seliskar, a senior, ended the impressive night for the siblings with an automatic all-American time in the 100 backstroke, winning in 50.05.

Also setting a regional record was the West Potomac team of Reanna Dona, Maxine Clifford, Sara Bertram and Hellen Moffitt in the girls’ 200 medley, with an automatic all-American time of 1:46.19.

Other automatic all-American swims came from Abi Speers of Langley in the girls’ 50 freestyle (23.32); and Herndon’s Jenna Van Camp in the 100 breaststroke (1:03.21).