Career
He moved up to the Junior. A Burlington Chiefs in 2007, and played for the Chiefs through 2010. Crepinsek was drafted 23rd overall in the 2011 MSL Draft by the Ajax Rock, and made his debut for the Rock that summer.
He moved on to play for the Langley Thunder of the Western Lacrosse Association in 2013, and returned to the Rock, now based in Oakville, in 2014.
Crepinsek was drafted with the last pick in the first round of the 2012 NLL Draft, and played all 16 games during his rookie season, collecting a Swarm rookie record of 18 loose balls in the process. He was re-signed to a two-year contract extension after his rookie campaign.