Debut: Vs Castleford Tigers (A) 18/04/2022

Honours:

Half back Jack Sinfield made his Super League debut for the Rhinos during the 2022 season. Starting at half back against Castleford Tigers, Sinfield went on to play five times for the first team during that season. He also added a combined 14 appearances for the Reserves and Under-18s Academy as he helped the club lift the Academy Grand Final title with two drop goals and two goals against St Helens.

2023 saw the half back featured six times in Super League, including the final four games of the season in which he recorded his first senior try against Castleford at Headingley. He continued to also play in the Academy and Reserves teams, scoring one try and 14 goals for the Under-18s and six tries and 22 goals for the Reserves. He was one of four players to sign three-year extensions that season.

2025 saw Sinfield make his most appearances for the Rhinos first team as he featured 14 times for Brad Arthur. The half back started the season with four tries across games against Wests Warriors, Castleford and Wigan, plus he kicked the deciding drop goal against St Helens at Magic Weekend to ensure a 17-4 win over St Helens. He picked up games for the Reserves too, finishing as the side's top goal kicker and points scorer with 37 goals and 96 points in six games.

Utilised between the First Team and Reserves again in 2024, he played 13 times across both competitions. Four starts came in the senior squad as he scored a try on his first start of the year against London, before playing in games against Catalans and Warrington on the road and at Magic Weekend. For the Reserves, he led the side with 10 tries, 31 goals and two drop goals as the Rhinos finished seventh at the end of the campaign.

At the end of the 2025 season, Sinfield was released from his contract to persue opportunities elsewhere.

The youngster started playing at Saddleworth Rangers and went on to win two Oldham Cups (2017, 2018) and reach the Lancashire Premier Play offs in 2018 and 2019. He was in the line up for the Under-16 match against NSW Country RL at the end of 2018.

He is the son of Leeds Rhinos legend and Hall of Famer Kevin Sinfield, who also came through the club’s Academy system.