Time for a Change will undergo surgery Friday after suffering an injury that almost certainly will end his ill-starred racing career.

The 4-year-old fractured the cannon bone in his left foreleg after a swift workout Tuesday morning, although there are indications that the colt was suffering from serious physical problems before that work. Time for a Change had looked like one of the brightest stars of his generation when he beat Dr. Carter and Devil's Bag in the Flamingo Stakes at Hialeah last winter.

But he caught a virus that almost killed him and was knocked out of training for several months. He was never the same horse again. Time for a Change won an allowance race this winter as he attempted to launch his comeback here, but finished a disappointing fourth in the Donn Handicap. As he prepared for last Saturday's Gulfstream Park Handicap, rumors swirled around the backstretch that he was training miserably and was on the verge of being retired.

This widespread view seemed to be confirmed when trainer Angel Penna scratched the colt from the $250,000 event in which he would have been the favorite. In view of all the negative signs about his condition, racetrack people wonder why Penna would send the colt out for the sizzling five-furlong workout in 58 3/5 seconds that probably marked the end of his racing career.

They will never know, just as they will never know what kind of horse this would have been if he had been a bit luckier and healthier.

In the surgery Friday, Time for a Change will have screws inserted in his leg to aid the recovery process. He will eventually be sent to Spendthrift Farm in Kentucky to begin a stud career.e awarded to young artists with outstanding work. Manassas Plans Record