Having been admitted to the Sydney top-grade competition in 1947 the young Manly-Warringah Sea Eagles in 1949 had suffered three lean seasons and set about to secure the services of O'Connell, then regarded as one of the stars of the Australian game. The Manly committee secured O'Connell with a 350 pound offer but his registration for the 1950 season was thwarted when Eastern Suburbs blocked the transfer on residential grounds. The Easts committee were dissatisfied with residential evidence O'Connell was able to table for himself and sought proof that O'Connell's wife had also already made the move to Manly. O'Connell was unable to provide this on-the-spot at the meeting, the transfer was blocked and on principle he chose to sit out the 1950 season thereby also jeopardizing his representative career.
O'Connell played two seasons with Manly as captain-coach' leading them to 2nd place on the 1951 competition ladder and to the club's first Grand final appearance.
He was selected for the 1948-49 Kangaroo Tour and played in five Tests and 16 minor tour games. His sole appearance as captain of the Kangaroos was in the First Test at Leeds of the 1948 Ashes series.
His final international appearance was in the 3rd Test of the 1951 domestic series against France.
As of 2008, O'Connell remains Australia's oldest living Test captain.