Roscoe Tanner, born on October 15, 1951, is a distinguished former professional tennis player from the United States. He achieved remarkable success in his career, reaching a peak singles ranking of world No. 4 on July 30, 1979. Tanner's powerful left-handed serve became his signature, famously clocked at an astonishing one hundred fifty-three miles per hour during the 1978 American Airlines Tennis Games singles final against Raúl Ramírez.
Among his notable accomplishments, Tanner won the men's singles title at the first of two Australian Open tournaments held in 1977, triumphing in the event held in January. His prowess on the court was further showcased when he reached the Wimbledon final in 1979, where he faced off against the legendary Björn Borg, ultimately losing in a gripping five-set match.
Despite his athletic achievements, Tanner's post-retirement life garnered media attention for various legal troubles in the 2000s. These issues included periods of imprisonment, multiple arrests for failing to meet child support obligations, allegations of financial misconduct, and bankruptcy.