Bayern, who won the Woody Stephens Stakes on the Belmont Stakes undercard last month, worked five furlongs on Polytrack in 1:02.80 Wednesday at Del Mar in preparation for a scheduled start July 27 in the Grade 1 Haskell Invitational at Monmouth.
Bayern worked at 6:30 a.m., before the mid-morning renovation break.
“He went good,” said his trainer, Bob Baffert. “The track was really slow early this morning. He was just cruising around there.”