Man o' War all-time greats with an "almost unbelievably brilliant performance" before a crowd of 25,000. At odds of 1-20, he faced only one rival, the well-regarded colt Donnaconna. Man o' War led from the start and Kummer let him run freely at the top of the stretch, allowing Man o' War to draw away by 20 lengths. Although eased in the final furlong, Man o' War set a world record of 2:14, beating the previous standard set in England by over two seconds and beating Sir Barton's American record by over three seconds. This time stood as the American record until 1961
Man o' War War never led the broodmare sire list, he was the runner-up ten times and finished in the top ten 22 times. Female line descendants from Man o' War include Eight Thirty, Stymie, Nijinsky, Sword Dancer, Pavot, Riverman, Jim French, Sir Ivor and Kelso. War Admiral was also a leading broodmare sire, especially when crossed with the influential mare La Troienne and his name can be found in many modern pedigrees through such horses as Seattle Slew, Buckpasser and Dr. Fager. American Flag also contributed to Man o' War's modern influence as he was the sire of the second dam of