Mark is in his fourth year as the Player Development Coordinator in the PGA Golf Management Program at Ferris State University in Big Rapids, MI. Prior to this he served 31 years as the Head Golf Professional at Watermark Country Club in Grand Rapids, MI. In 2016 he served as a Referee for his 27th PGA Championship in July and was Chief Referee for the 2016 Ryder Cup. He has also officiated at 20 Masters Tournaments, seven Open Championships, five U.S. Opens and nine Ryder Cups. The PGA of America honored Mark in 2008 as the recipient of the National Horton Smith Award for contributions to the PGA Education Program. In 2007 he was elected to the Michigan Golf Hall of Fame, in 2008 the Grand Rapids, MI Sports Hall of Fame, and in 2011 became one of twelve original inductees to the Michigan PGA Hall of Fame. Mark has taught 43 PGA/USGA Rules of Golf Workshops since 1994.