A native of Bessemer, Michigan, he compiled a 821–316 record in 37 years as a head basketball coach.

He then spent 11 years as head coach of the women's basketball program at Michigan Technological University in Houghton, Michigan.During his tenure, Borseth accumulated a 225–97 (.699) record, claimed four Great Lakes Intercollegiate Athletic Conference (GLIAC) championships, and qualified for the NCAA Division II Tournament seven times.

During the 1992–93 campaign, Borseth led the Huskies to a 30–3 mark en route to a third-place finish in the NCAA Division II Tournament.

[2][3] In the conference, Borseth started off by throwing his clipboard at the podium with intense force, then passionately complained about his team giving up a double-digit lead, failing to collect offensive rebounds and being called for a foul on what he considered a legitimate box-out.

Borseth led the Wolverines to two more WNIT berths in the next three seasons and returned them to the NCAA tournament in 2012, where they lost in the first round.