Jack Harper (tennis)
Jack Edwin "Jock" Harper was an Australian amateur tennis player who competed mainly in the 1930s and 1940s. He reached the quarterfinals of the Australian Championships in 1946 and was runner-up in the men's doubles in 1937 partnering John Bromwich.
In April 1946 Harper lost just a single point when he defeated J. Sandiford 6–0, 6–0 at the Surrey Open Hard Court Championships in a match that lasted 18 minutes, the shortest singles match on record.Doubles: (1 runner-up)