The University of Oklahoma's Jake Dalton took the top spot Thursday night as the U.S. Winter Cup Challenge began in Las Vegas.
The annual reranking competition will determine the U.S. national team through August's national championships in St. Paul.
Danell Leyva (USA) is second after the first day of competition at the U.S. Winter Cup Challenge.
Dalton, 20, leads Universal's Danell Leyva, 88.100-87.450. Berkeley's Glen Ishino is third (86.900).
Dalton, a member of the U.S. team at the 2009 Worlds in London, took the top score on floor exercise (stuck layout Arabian double front mount; triple twist dismount; click here for video). The Nevada native performed a triple-twisting Tsukahara on vault (15.950).
Leyva, a two-time world high bar finalist, earned the high score on that event with 16.000. Illinois gymnast Daniel Ribeiro, whose father was an Olympian for Brazil, matched that score on pommel horse (click for video).
Other event leaders were USOTC's C.J. Maestas on still rings (15.450), Michigan's Sam Mikulak on vault (16.050) and USOTC's Andrew Elkind on parallel bars.
U.S. national champion Jonathan Horton, who recently broke his thumb, competed still rings only.
World and Olympic bronze medalist Sasha Artemev made his return to competition, but struggled on three events before scratching.
Competition concludes Saturday evening, with 42 of the top all-around and event gymnasts advancing to day two.
External Link: Full results and live scoring at USA Gymnastics