Tags: Tennis Player.
Roscoe Tanner (born October 15 1951) is a former American professional tennis player who turned pro in 1972 and reached a career high world singles ranking of World No. 4 on July 30 1979. Tanner was famous for his big left-handed serve which was clocked at 153 mph at Palm Springs in 1978 during the final against Raúl Ramírez.He is also known for winning the men’s singles title at the first of two Australian Open tournaments held in 1977.