Teacher – Coach
| 2013 - Present | USATF Throws Coach at Olympic Training Center Chula Vista CA |
| 1973 - Present Coach and/or Advisor to Olympic Throwers | |
| Krishna Poonia - India | 6th Place 2012 Olympics, 2010 Commonwealth Games Champion, 2008 Olympian |
| Dani Samuels - Australia | World Champion 2009 |
| Stephanie Trafton Brown - USA | Olympic Gold Medalist 2008, Olympian 2004, US National Champion 2009 & 2011 |
| Adam Setliff - USA | 1996 finalist and 2000 Olympics 5th place, US Champ - 2000, ’01, ‘02 |
| Lynn Winbigler Anderson - USA | Olympian 1976 1980 & US National Champion |
| High School, Collegiate and Private Coach | |
| 2006 - 2013 | Throws Coach at Concordia University, Portland OR. Mac developed 24 NAIA National Champions and 96 All Americans in the throwing events in his 8 years at Concordia. |
| 2000 - 2013 | Founded the Oregon Throwers Academy (OTA) for the development of throwers age 10 through high school in the Oregon-Washington region. |
| 1985 - Present | Provides coaching to athletes across the country via the internet and video analysis. |
| 1985 - 1989 | Co-Founded an Explorer Scout Post for the development of the Olympic Throws in the San Jose CA, area with fellow Olympian, Hammer Thrower, Ed Burke. High School Throwers regularly exceeded 180’ in discus and 200’ in the hammer annually including US Olympian, Kevin McMahon. |
| 1980 - Present | Coached High School athletes - State Champions and National leaders. Mac has developed high school boys who have thrown the discus over 200’, girls over 165’, male hammer throwers over 200’, javelin throwers over 235’ and 60’+ shot putters. |
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