James Ernest Renshaw was born 15 minutes earlier and was a half-inch taller than his Hall of Famer twin brother William, but the pair entered the International Tennis Hall of Fame together.
He and William were a potent doubles combination, winning Wimbledon five times (1884, 1885, 1886,1888, 1889), a record only surpassed by Laurie and Reggie Doherty who have eight titles. He played in the Wimbledon Gentlemen Singles Challenge Round five times – three times in losing matches against his brother – and earned his lone title in 1888 over Herbert Lawford 6–3, 7–5, 6–0. Ernest won the singles championship at the Irish Lawn Championships in 1883, 1887, 1888, and 1892.