Height: 6 ft. 7 in
Weight: 245 lbs
College: University of Texas
Turned Pro: 1980
Birthplace: San Diego, California
Country: United States
Sponsor: Tayler Made
Blackmar played college golf at the University of Texas where he was a three time selection to the All Southwest Conference team. He turned pro shortly after graduating. Blackmar was known as one of the tallest players to be on Tour during his time. He plied his trade on the various mini tours for a number of years before securing his PGA Tour card in 1984 after finishing second at Q School.
He won in his rookie season at the Canon Sammy Davis Jr.-Greater Hartford Open after a play-off with Jodie Mudd and Dan Pohl. It was one of four top 10 finishes he had and would end his rookie season 28th on the money list. After closing with a 65, Blackmar forced a play-off with Payne Stewart at the 1988 Provident Classic. He would go on to win the play-off after birdieing the first hole. After a space of nine years, Blackmar won his third and final PGA Tour title in 1997 at the Shell Houston Open after yet another play-off, this time against Kevin Sutherland. He would lose his full card after the 2000 season. His best finish at a Major Championship was a tie for 6th place at the PGA Championship in 1997. He would work as a commentator for a number of years. He became eligible for the Champions Tour in 2009 and proceeded to win his first event, the AT&T Championship.