 An injury crisis, including the loss of regular keeper Phil Joslin, left Torquay without a goalkeeper for the match at Plainmoor against Walsall in April 1948 and, although a midfielder, Casley played in goal and helped Torquay to a 3–2 victory, which in turn meant that they would not finish at the foot of the league.Casley never played for Torquay's league team again, in any position, joining Headington United (later to become Oxford United) in 1949 as their first professional player.Casley played his first game for Headington in goal, but reverted to the outfield thereafter, and scored the club's first hat-trick in the Southern League in his third game.