Playing at No. 2 for the Statesmen, O'Neil posted a 3-1 record in the 2013 Yale Round Robin over the weekend. Against Stanford, he came up with a 3-11, 11-6, 8-11, 11-7, 11-5 win. Against Colby, O'Neill dropped his first game 11-5 but rallied to win the next three 11-9, 12-10, 11-6. Against Tufts, he helped the Statesmen to a 6-3 win with a 7-11, 11-3, 11-5, 11-6 victory. O'Neil is tied for the team lead with six wins this season.