Jockey Jose Flores, a winner of 4,650 races, was on life support at Aria Jefferson Torresdale Hospital in Philadelphia on Tuesday morning after going down in a spill during the ninth race at Parx Racing on Monday. Flores suffered extensive cranial and spinal injuries in the accident and is not expected to survive. Parx Racing has canceled its Tuesday card, according to Sam Elliott, the track's director of racing. "We've canceled out of respect for Jose, his career, and his family," Elliott said. "Jose has been a very well respected mentor in the local jockey colony." As information about the extent of Flores's injuries spread Monday evening, many members of the local riding colony gathered at the hospital, according to David Yannuzzi, Flores's agent the past 14 years. "There must have been 55 people at the hospital," Yannuzzi said. "Jose is a good-natured, good-hearted guy. He had money but he loved to ride. He'd say, 'I love this, why would I stop?' " Flores, 57, is married to former jockey Joanne McDaid-Flores, who was at the hospital awaiting the arrival of family members from Florida. The Floreses have a 7-year-old son Julian. Jose Flores has two grown sons, Juan and Junior. According to Terry Meyocks, the national manager of the Jockeys' Guild, the last rider to die from injuries sustained in a race was Mario Chavez at Will Rogers Downs in October 2017. He was the 156th rider to perish from race-related injuries since the Guild began keeping such statistics in 1940. Love Rules, with Flores aboard, was dueling for the lead between horses on the far turn of the six-furlong starter allowance when he fell. A trailing horse, The Pooch, fell over Love Rules and Flores. A third horse, Easy River, unseated his rider while avoiding the two fallen horses. Flores was the dominant rider at Penn National in the 1990s, winning riding titles in 1994, 1996, 1997, and 1998. He finished second in 1995, third in 1993, and has 2,215 victories at Penn National. On the advice of trainer Scott Lake, he relocated to Parx, then named Philadelphia Park, in 1999. He was the leading rider at Parx in 2004 with 168 wins and was inducted into the track's Hall of Fame in 2013. Flores, a native of Peru, has 2,255 wins at Parx. Flores has ridden 1,203 of Lake's 5,894 career winners. "Jose was a great person, a great friend," Lake said. "When he first started at Penn he had an aggressive style and would put all of his horses into the race early. He had a knack for making a move a jump or two before everyone else did." The lone graded stakes win of Flores's career came aboard Loaded Gun in the Grade 3, $200,000 Philadelphia Park Breeders' Cup in 1999. Flores won two other stakes on Loaded Gun that year. Flores's more recent stakes winners include Favorite Tale, with whom he won the Gold Fever at Belmont Park in 2014; Eighth Wonder, whom he won three Parx stakes with in 2015 and 2016; and Discreet Lover, with whom he won the Swatara at Penn National last November. Ruben Silvera, the rider of The Pooch in Monday's accident, reportedly was unhurt. Carol Cedeno, the rider of Easy River, had an MRI taken for neck pain but has been released from the hospital. Flores's mount, Love Rules, was euthanized; The Pooch was walked back to his barn; and Easy River was brought back to the paddock and then vanned back to his barn.