The 2013 NRL season was the 106th season of professional rugby league club competition in Australia. The National Rugby League's main competition, named the 2013 Telstra Premiership after major sponsors Telstra Corporation, was contested by sixteen teams during the regular season, which lasted from March to September, and resulted in the top eight finishing teams, who went on to contest the finals. The season culminated in the Grand Final, in which the Sydney Roosters defeated the Manly-Warringah Sea Eagles 26-18 to win their first NRL premiership since 2002.