That year, he was redshirted and did not play, but received the team's Offensive Newcomer Award for the spring season.
He was selected honorable mention All-Big Ten by both the coaches and media as a sophomore after starting all 12 games at left guard, which was part of an offensive line that allowed Purdue quarterbacks to be sacked just 10 times in 528 pass attempts (one every 52.8 attempts).
He received the team's Pit Bull award for exemplifying tenacity and intense play during the 2002 spring season.
As a senior in 2002, he was named honorable mention All-Big Ten by the media after starting all 13 games at center and helped open holes for a Boilermaker rushing attack that amassed 2,861 yards and 26 touchdowns on the ground.
Mruczkowski came out of retirement by signing with the Florida Tuskers of the United Football League on August 25, 2009.