In 2010, Flower was loaned from Crusaders to South Wales Scorpions of Championship 1, and made four appearances for the club, scoring one try.

In 2013, he established himself as a first-choice player and was a member of the team that won the 2013 Challenge Cup Final with victory over Hull F.C.

[7][8][9] He played in the 2013 Super League Grand Final victory over the Warrington Wolves at Old Trafford.

[15] Flower was subsequently given a six-month ban by the RFL disciplinary committee, the longest in the competition's history for an on-field act.

[6] Hohaia retired from rugby league on 29 April 2015, citing recurrent concussion symptoms as the reason.

[22] In early February he signed a new four-year deal running till the end of 2020 despite interest from other Super League and NRL clubs.

[24] Flower helped Wigan win a fourth World Club Challenge in the 22-6 victory over Cronulla-Sutherland Sharks.