Premise: Anastasija Sevastova (born 13 April 1990) is a professional tennis player from Latvia. Having retired in 2013 due to recurring injuries, Sevastova returned to competition in 2015 and became known for her campaign at the 2016 US Open, where she defeated third-seeded Garbiñe Muguruza as well as Johanna Konta en route to her first ever Grand Slam quarterfinal.
Hypothesis: Anastasija Sevastova came out of retirement in 2015