Jockey Kerwin John suffered a fractured pelvis and will be sidelined for four to six weeks after a Marcelo Polanco-trained filly flipped over and rolled on him during training hours at Santa Anita on Monday morning."I'm relieved he's alive," John's agent, Sue McBrayer said. "It could have been a lot worse. He had just gotten a leg up when (the horse) went over right on top of him. His feet weren't in the irons; he said that if he had had his feet in the irons he could have jumped off. The good news is that it's a fracture and not a complete break. He won't need surgery, just some time."John was set to be released from Methodist Hospital in Arcadia on Tuesday afternoon and will spend the next two weeks recuperating at his Southern California home. After a brief trip to his native St. Croix, he'll return to California to prepare for Santa Anita's winter-spring meeting."He's already up and walking around," McBrayer said. "The doctors said (walking) will help him heal faster."The 29-year-old rider, who won his first career graded stakes aboard Island Fashion in the Lady's Secret Breeders' Cup Handicap (gr. II) and rode in his first Breeders' Cup this year, hopefully will be back in the saddle by opening day at Santa Anita on Dec. 26, according to McBrayer.