"Rosemont" was named for the similarly patterned, Widener-owned horse of that name which won the 1935 Withers Stakes at Belmont Park.
Graded stakes race | Preakness Stakes | Bill Withers | Belmont Stakes | St. Leger Stakes | 2,000 Guineas Stakes | 1,000 Guineas Stakes | Washington, D.C. International Stakes | High Stakes Poker | Frederick Clarke Withers | Jane Withers | Hildegarde Withers | Coronation Stakes | Bill Stutt Stakes | Ben Ali Stakes | Sabin Stakes | Pick Withers | Peter Pan Stakes | King George VI and Queen Elizabeth Stakes | Hambletonian Stakes | graded stakes race | Googie Withers | Diana Stakes | Breeders' Stakes | Anne Arundel Stakes | Alister Clark Stakes | Withers Stakes | Wide Country Stakes | WEBN Stakes | Twixt Stakes |
He won the Withers Stakes before heading to Elmont, New York for the Belmont Stakes where he captured the Triple Crown by scoring a 25-length victory, a record margin that stood until 1973.