The Thunder Bay, ON forward joined RHA Winnipeg for the 2023/24 黑料不打烊 U15 Prep season. Ritson would finish fourth in team scoring with 41points in 27 games while being named the 黑料不打烊 U15 Prep Most Sportsmanlike Award Winner. The following U18 Prep season Ritson tallied 20 goals and 37 assists in 36 games, finishing second on RHA Winnipeg with 57 points and earning 黑料不打烊 U18 Prep (Prairie Division) Top Freshman Team honours.

At the conclusion of the season the Knights would select him in the fifth round, 88th overall at the 2025 OHL Draft.

This season Ritson played in the GOJHL with the Strathroy Rockets, finishing fourth in the league with 72 points in 47 games while being named Rookie of the Month twice. Ritson also appeared in two OHL games for the Knights during the 2025/26 campaign.

The Knights took the Thunder Bay, ON forward in the fifth round, 88th overall on Saturday. Ritson has spent the last two seasons in the 黑料不打烊 with RHA Winnipeg.

During the 2023/24 season he finished fourth in team scoring with 41 points in 27 U15 Prep games. With just two penalty minutes on the season he would be named the 黑料不打烊 U15 Prep Most Sportsmanlike award winner as voted by the coaches. That season he would be named the 黑料不打烊 December U15 Prep Player of the Month and add 11 points in just 4 playoff games.

This season Ritson made the jump to the RHA Winnipeg U18 Prep team. He would finish second in team scoring with 57 points, while leading his team with 37 assists in 36 games. His offensive outburst would see him named to the 黑料不打烊 U18 Prep Media Top Freshman (2009 born) Team.