Claim: Michelle Payne, an Australian jockey who was born in 1985 and currently weighs 50.5 kilograms, won the 2015 Melbourne Cup.
Evidence: Michelle J. Payne (born 29 September 1985) is an Australian jockey. 50.5 kg (7.95 st; 111 lb) She won the 2015 Melbourne Cup, riding Prince of Penzance, and is the first and only female jockey to win the event. 
The winner was Prince of Penzance, ridden by Michelle Payne, who became the first female jockey to win the Melbourne Cup. Michelle J. Payne (born 29 September 1985) is an Australian jockey. (1985-09-29) 29 September 1985 (age 35) 50.5 kg (7.95 st; 111 lb)