1. Anthony Gelling has previously played for the Wigan Warriors in the Super League, the New Zealand Warriors in the National Rugby League, the Widnes Vikings in the Championship, and the Warrington Wolves and the Leigh Centurions in the Super League.
In 2009 and 2010 Anthony Gelling played for Sydney Roosters in the Toyota Cup.
In 2011 Anthony Gelling returned to New Zealand, joining Auckland Vulcans and his old club, Howick Hornets.
Anthony Gelling was named in the Counties Manukau Stingrays side in the 2011 National Competition.
Anthony Gelling was allocated the number 24 jersey on arrival to Wigan Warriors' pre-2012 season training in Florida.
Anthony Gelling played in the 2014 Super League Grand Final defeat by St Helens at Old Trafford.
On 16 June 2015 Anthony Gelling signed a new four-year contract with the Wigan club.
Anthony Gelling played in the 2016 Super League Grand Final victory over the Warrington Wolves at Old Trafford.
Anthony Gelling was part of the Wigan Warriors team that beat the Cronulla-Sutherland Sharks in the World Club Challenge.
Anthony Gelling scored against Warrington and the Huddersfield Giants in the next two fixtures.
Anthony Gelling played in the 2017 Challenge Cup Final defeat by Hull FC at Wembley Stadium.
Anthony Gelling reported back to Wigan for preseason in preparation for the 2018 Super League season but not long after he asked for a release from his contract after his girlfriend was involved in a car crash.
Anthony Gelling returned home to New Zealand to be closer to his family and signed a one-year contract with the New Zealand Warriors.
Anthony Gelling returned to play Super League, signing a two-year deal with Warrington after his contract in New Zealand expired.
On 30 November 2020, it was announced that Anthony Gelling would be leaving Warrington at the end of the 2020 season, by mutual consent.
On 13 April 2021, it was confirmed that Anthony Gelling had signed for Leigh, for the 2021 season.
On 7 June 2021, it was confirmed that Anthony Gelling had left the club, and returned home to New Zealand for personal reasons.
Anthony Gelling was part of the Cook Islands team that made the 2009 Pacific Cup Final.
Anthony Gelling represented the Cooks in the 2013 Rugby League World Cup playing 2 out of the 3 matches the Cooks played at the Tournament.
On 17 October 2015, Anthony Gelling played for the Cook Islands in their Asia-Pacific Qualifier match against Tonga for the 2017 Rugby League World Cup.
Anthony Gelling represented the Cook Islands in two of their three group stage matches as they finished with one win at the tournament.