Clark Burckle
Courtesy of: Peter H. Bick
Editor's note: This article was updated on July 11 to reflect Roland Schoeman's non-participation in the meet. The original text mentioning his participation has not been removed, and an update follows below.

PHOENIX, Arizona, July 8. OLYMPIAN Clark Burckle will be a major highlight of next month's U.S. Masters Swimming long course nationals in Mission Viejo, Calif., according to psych sheets released today.

Burckle was a finalist in the 200 breaststroke at last year's Olympics, placing sixth. He just missed out on a spot on this summer's world championship squad, finishing fourth in the 200 breast. Burckle, 25, is scheduled to swim all three breaststroke events in Mission Viejo, and will likely eradicate the Masters world records in the 100 and 200 breast events in the 25-29 age group, with a shot at the 50 record:

50 breast world record: 27.96, Mark Gangloff
100 breast world record: 1:02.65, Christopher Jones
200 breast world record: 2:16.70, Gary Marshall

Schoeman will be fresh off the plane from Barcelona, Spain, after competing for South Africa at the FINA world championships. Schoeman, 33, will be looking for another opportunity to post fast times ... and set some Masters world records. He's swimming the 50 and 100 free, 50 and 100 fly and the 50 breast in the 30-34 age group.

50 free world record: 22.53, Sabir Muhammad
100 free world record: 50.84, Stephan Kunzelmann
50 fly world record: 24.15, Ozzie Quevedo
100 fly world record: 54.19, Stefan Gherghel
50 breast world record: 28.59, Carlos Alencar

Update: Schoeman will not participate in Masters nationals, choosing instead to compete in the FINA World Cup meets in Europe after world championships.

Burckle will be joined at the meet by Tucson Ford teammate Austen Thompson, the 2012 NCAA champion in the 400 individual medley. Thompson, 23, will swim five events: 50, 100 and 200 breast, as well as the 200 IM and 50 free. With FINA not recognizing the 18-24 age group for world record purposes, Thompson will have to settle for chasing USMS national records in each event. Two of the records in his age group are held by fellow University of Arizona alumnus Dave Rollins in the 50 breast (28.87) and 200 IM (2:09.30).

Other swimmers to watch include Steve West, who was the oldest male competitor at last year's Olympic Trials, where he raced in the 100 and 200 breaststrokes; David Guthrie, who nearly broke Masters world records a couple of months ago while unrested; Noriko Inada, a three-time Japanese Olympian; and Laura Val, a perennial fixture on the Swimming World Magazine World Masters Swimmers of the Year list.

The USMS nationals runs August 7-11.

Psych sheets