Mark is in his sixth year as the Player Development Director 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. He has served as a Referee at 28 PGA Championships and was Chief Referee for the 2008 and 2016 Ryder Cup. He has also officiated at 20 Masters Tournaments, 7 Open Championships, 5 U.S. Opens and 9 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 46 PGA/USGA Rules of Golf Workshops since 1994.