When Man o' War won in :59 over Belmont Park's straight course on June 6, 1919, the track record for 5 furlongs straight was :55 3/5 by the filly Pen Rose, carrying 110 pounds, set on September 12, 1918. This also established a new American record. The course record that Pen Rose broke was :57 1/5, set on June 7, 1918.
