He was drafted in the Ontario Junior A Lacrosse Draft to the Burlington Chiefs where was named a two time team captain and earned First Team All League honors for his final season.

During his junior career, O'Connor also played for the Oakville Buzz and Halton Hills Bulldogs of the OLA Junior B Lacrosse League.

After one season with the Rock, he was traded to the Minnesota Swarm (now Georgia Swarm)[1] where he was a contributing member of their 2017 NLL Championship winning team.

Prior to the 2018-19 season, O'Connor was traded to his current team, the Bandits.

[2] O'Connor also played division one lacrosse for Hobart College.