 Moon played an integral part in St Johnstone's promotion to the Scottish Premier League, particularly whilst Jody Morris was out of the side injured.Moon started off his SPL season in good form, and scored his first top flight goal with a late equaliser against Dundee United at Tannadice.However, in March 2010 in a midweek clash with Aberdeen, he was badly injured in a clash with midfielder Mark Kerr, and was stretchered off having played a massive part in St. Johnstone's victory by then.