He was a consultant for Marquette University, when they added men's and women's varsity lacrosse on December 16, 2010.
In 1988, he led the Greyhounds to the NCAA tournament, and repeated the feat each subsequent season of his career at Loyola for a total of 14 appearances.
[4] Cottle was hired as the head coach for the University of Maryland men's lacrosse team in September 2001.
In 2008, Maryland had an attacking corps composed entirely of freshman, but advanced to the NCAA quarterfinals before being eliminated by Virginia in an overtime game.
Maryland athletic director Deborah Yow had earlier told Cottle that he was expected to reach the semifinals for a contract extension to be considered.
At the time, the Terrapins had not secured a national title since 1975, despite being the largest school in the state of Maryland, a traditional bastion of lacrosse talent.
[6][7] In July 2010, the Chesapeake Bayhawks of Major League Lacrosse hired Cottle as a consultant.