 In the final round, Curtis unleashed a left to the nose and a right to the jaw, and finished with a right to the eye, that ended the match, leaving his opponent struggling to remain conscious.In two matches that were critical in establishing his reputation, Curtis defeated the well known boxer Peter Warren on 16 April 1823 in Moulsey Hurst, and on 8 July 1823 in Blindlow Heath in one round.In his April 16 bout, Warren was disqualified for striking Curtis on the head while sitting on his knee.