WATCH: Mark Tollefsen's twist on between the legs dunk

Mark Tollefsen joined Arizona as a graduate transfer this offseason. In one of his first appearances at the McKale Center, the 6-foot-8 forward wowed the crowd -- and his teammates -- with a between the legs dunk.

Although, Tollefsen has a twist to the impressive slam. He put the ball between his legs after catching a made layup for the contest-winning dunk. He earned a perfect score from the judges and was swarmed by his new teammates.

Tollefsen averaged 14.0 points and 5.4 rebounds last season for San Francisco.