Bold did not run in the Kentucky Derby and did not appear as a three-year-old until ten days before the Preakness Stakes.[2] He ran twice at Pimlico Race Course winning once and then finishing second by a neck to Alerted in the Preakness Prep over 8+1⁄2 furlongs[3] The Kentucky Derby winner Count Turf had not been entered in the Preakness and Bold, ridden for the first time by Eddie Arcaro, started second favourite at 4.1 : 1 behind the Greentree Stable entry which comprised Big Stretch and Hall of Fame. The colt was equipped with a set of asymmetrical blinkers which blocked the vision in his right eye to prevent him drifting away from the rail.[4] Arcaro sent Bold into the lead shortly after the start and after being briefly headed by Counterpoint he opened up a clear lead. Bold turned into the stretch three lengths clear of his rivals and steadily increased his advantage to win by seven lengths from Counterpoint, with Alerted third. The win, which gave Arcaro a record fourth win in the race,[5] reportedly attracted the biggest ever television audience for a horse race up to that time.[4]
Bold suffered from bucked shins after the Preakness, and after finishing a well-beaten third to Count Turf in the Polynesian Purse at Belmont Park he was withdrawn from the Belmont Stakes.[6] Bold returned to the racecourse in July to win the Saranac Handicap at Jamaica Race Course, leading all the way on a muddy to track to win by a length from Loridale.[7]
Death
Bold's problems with bucked shins recurred during the early part of 1952. He was rested in Virginia before resuming his 4-year-old campaign in Saratoga where he ran twice without success. He was struck by lightning and killed on the evening of July 9–10, 1952 while in an outdoor training paddock.[8]