In an all-American final Madison Keys defeated Danielle Collins in Strasbourg to win her eighth WTA Tour title.
Madison Keys will play in a red-clay final for the first time since 2016 against her fellow American and former pen pal Danielle Collins.
Danielle Collins secured back-to-back WTA Tour titles when she defeated Daria Kasatkina 6-2 6-1 in the Charleston Open final on Sunday.
Danielle Collins produced a fairytale ending to her first WTA 1000 final in her last year on tour by beating Elena Rybakina to win the Miami Open.
Naomi Osaka was eliminated in her opening match at the Abu Dhabi Open, as Danielle Collins handed her a straight-sets defeat.
Top seed Iga Swiatek was forced to dig deep to get past Danielle Collins on Thursday's action in the Australian Open.