2014 - 2014 Season Sidlow featured in the pre-season friendlies against Hull FC, Dewsbury and Castleford.

Sidlow played in the Championship Shield Game 1 Whitehaven to the Final Sheffield.

Following the Bulls' liquidation at the start of the 2017 season, Sidlow joined League 1 side Toronto Wolfpack.

[10] In round 18 of the 2021 Super League season, he scored two tries for Leigh in a 28–34 loss against Hull KR.

[12] On 3 October 2022, Sidlow played for Leigh in their Million Pound Game victory over Batley which saw the club promoted back to the Super League.

[13] In the 2023 Super League season, Sidlow played 12 matches for Salford as the club finished 7th on the table and missed the playoffs.