Graded stakes race | Preakness Stakes | Belmont Stakes | Irwin Allen | St. Leger Stakes | Steve Irwin | 2,000 Guineas Stakes | 1,000 Guineas Stakes | Washington, D.C. International Stakes | Robert Irwin (artist) | Robert Irwin | High Stakes Poker | Bill Irwin | May Irwin | Irwin Shaw | Irwin M. Jacobs | Lew Irwin | Irwin L. Jacobs | Bob Irwin | Irwin Cotler | Frederick Irwin | Coronation Stakes | Bill Stutt Stakes | Ben Ali Stakes | Sabin Stakes | Peter Pan Stakes | King George VI and Queen Elizabeth Stakes | Irwin Levine | Hambletonian Stakes | graded stakes race |
Some of his major race victories include the 1985 STC Golden Slipper Stakes, STC Pago Pago Stakes and the SAJC R.N. Irwin Stakes.