Jockey Felipe Valdez, who was unseated in a spill in Friday’s second race at Hollywood Park, remained hospitalized overnight at Centinela Medical Center for observation, according to track officials. Valdez, 32, fell from Score for Fun shortly after the start of a maiden claimer over 7 1/2 furlongs. He was on the ground briefly before transported via ambulance to a hospital. According to the jockey’s friends, he briefly lost consciousness in the incident. Valdez has had one win at the current meeting, and has won 38 races this year.