[9][10] Farrell played from the substitutes' bench in the 2011 Challenge Cup Final victory over Leeds at Wembley Stadium.

[19] Farrell missed four months of the 2016 season due to a rib injury,[20] but returned to play in the 2016 Super League Grand Final victory over the Warrington club at Old Trafford, and was awarded the Harry Sunderland Trophy for his man-of-the-match performance.

[23] He played in the 2019 World Club Challenge defeat against Sydney Roosters, but suffered a pectoral injury, which kept him out of action for four months.

[28] In round 13 of the 2023 Super League season, Farrell scored a hat-trick in Wigan's 26-22 golden point extra-time victory over Hull Kingston Rovers.

[29] On 14 October 2023, Farrell played in Wigan's 2023 Super League Grand Final victory over the Catalans Dragons.

[32] On 12 October 2024, Farrell played in Wigan's 9-2 2024 Super League grand final victory over Hull Kingston Rovers.

[33] Farrell was selected in the England squad for the 2013 Rugby League World Cup, and made his debut in the team's final group game against Fiji.