Opening day at Betfair Hollywood Park

Delvin Graham, 54, from Los Angeles checks the program prior the races at Betfair Hollywood Park on Thursday.  (Al Seib / Los Angeles Times)

Jay Cohen begins his 25th year at Betfair Hollywood Park on Thursday by calling the horses to the track on his herald trumpet.  (Al Seib / Los Angeles Times)

Jockeys make their way to their horses at the paddock at Betfair Hollywood Park on Thursday.  (Al Seib / Los Angeles Times)

Horses start the first race at Betfair Hollywood Park on Thursday. Jockey Eswan Flores rode Capture The Call to victory in the race.  (Al Seib / Los Angeles Times)

Gabriel Prado, left, Marcos Valle, right, and friends cheers on their horses during the second race on opening day at Betfair Hollywood Park. Prado picked the race’s winning trifecta.  (Al Seib / Los Angeles Times)