Elise Mertens (Dutch pronunciation: ['m?rt?ns]; born 17 November 1995) is a Belgian professional tennis player.
Mertens has won five singles and nine doubles titles on the WTA Tour, including one Grand Slam doubles title at the 2019 US Open, as well as eleven singles and thirteen doubles titles on the ITF Circuit.
She has a career-high singles ranking of world No.
12, achieved on 26 November 2018, and a best doubles ranking of No.
2, achieved on 9 September 2019.
Mertens made her WTA main-draw debut at the 2015 Copa Colsanitas in the doubles event, partnering Nastja Kolar.
She won her first WTA doubles title at the 2016 ASB Classic in Auckland, New Zealand, partnering An-Sophie Mestach.