- After playing junior football with the Regina Rams and winning the 1973 Canadian championship, Klempner began a teaching career in Uranium City before retuming to Regina and coaching high school football for 30-plus years at Campbell, Thom, Usher, Johnson and Balfour. Campbell won two provincial championships. Usher qualified for two city finals and, while Balfour’s head coach, his team won the city title in 1994 and made the final in 1995.
- Klempner joined the Rams’ staff in 1996, before the team transitioned to university football in 1999, serving as defensive coordinator for the national junior champs in 1997 and 1998 and again in 2000 for a Hardy Cup victory and a loss in the Vanier Cup. He was head coach, of the Regina Thunder junior team from 2005-12, helping to fortify the franchise by Working fundraisers and recruiting players such as future CFLers Stu Foord, Dan Clark and Zach Evans. Chosen PFC coach-of-the-year in 2009, his team advanced twice to the conference championship while laying the foundation for its 2013 national crown.
- One of the first Level IV football coaches in Saskatchewan, he scouted junior players for the CFL’s Saskatchewan Roughriders, coached softball, basketball and wrestling, contributed to football Canada’s long-term athletic development program and served on several volunteer committees staging amateur events in Regina.