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Preston Jenkins competes earlier in the season in a dual meet against Utah. Jenkins earned a personal best and increased his BYU all-time best in the 200-yard freestyle on the first night of the MPSF Championships.

Senior Preston Jenkins and junior Haley Bertoldo recorded career bests in relay splits during BYU's first night of the Mountain Pacific Sports Federation Swim and Dive Championships.

“We had a solid night with very good splits on the relays,” BYU head coach John Brooks said. “Our splits were faster than they have been all year.”

Jenkins recorded a 200-yard freestyle split of 1:35.21 in the men’s 800-yard freestyle relay, earning a personal best, increasing his No. 2 BYU all-time best of 1:35.40, as well as posting the fastest time in the first leg of the relay. Bertoldo earned a personal best split in the women’s 200-yard medley relay during the 50-yard backstroke leg with a split of 25.53.

The men took fourth in the 800-yard freestyle relay with a time of 1:35.21. Jenkins gave the team an early lead with his personal best split of 1:35.21. Brad Prolo took the second leg posting a split of 1:38.23, followed by David Harlan who also posted his fastest 200-yard freestyle time this year at 1:38.87. James Sorensen anchored the team with a spilt time of 1:39.94.

In the women’s 800-yard freestyle relay, a team of Casey Cunningham, Ellie Thornbrue Brinton, Vanessa Moffatt and Natalie Bennion finished in fifth at 7:24.42. Cunningham led off the team with a split of 1:52.67. In the second leg, Brinton posted a split of 1:50.67, followed by Moffatt taking the third leg at a 1:51.49 split. Bennion, anchoring the team, posted the fastest split time of 1:49.59.

A team of Kumni Ogunfeibo, Levi Jensen, Luis Ventura and Kent Fellows took fifth in the men’s 200-yard medley relay. Ogunfeibo led off the team with a split of 22.29. Jensen and Ventura followed with split times of 24.53 and 21.29, respectively. Fellows anchored the team, earning a split of 20.27.

The women’s 200-yard medley relay team took sixth with a time of 1:43.16. Bertoldo earned her personal best time in the first leg of the 50-yard backstroke at 25.53. Alexa Walters took the second leg, posting a split of 29.43, followed by Emily To’O with a split of 25.26. Katie Smith anchored, posting a split of 22.94.

The MPSF Swimming Championships continue Thursday with prelims at 10 a.m. PST, and finals at 6 p.m., at East Los Angeles College. MPSF Diving Championships begin Thursday with the 1-meter at 11 a.m., at the Rose Bowl Aquatics Center. Live stats are available on the schedule page.