World No. 4 Belinda Bencic and world. No. 6 Elina Svitolina have been knocked out of the Dubai Tennis Championships on Tuesday.
Jennifer Brady upset two-time Dubai champion Svitolina in straight sets 6-2, 6-1 while it took Russia's Anastasia Pavlyuchenkova three sets to beat Bencic 1-6, 6-1, 6-1.
Svitolina has had a faltering year on the WTA circuit. She lost to eventual finalist Garbine Muguruza at the Australian Open in January and to World No. 75 Nao Hibino in Hua Hin, Thailand.
Brady, however, is enjoying a fruitful 2020 circuit after beating world No. 1 Ashleigh Barty in the opening round of the Brisbane International in January.
Both sets came easy to Brady with an eight game streak in the second set seeing her lead 4-0 at one point.
Svitolina's game was marred by unforced errors while Brady served strong lost just one game in the second set.
There was another upset when Elena Rybakina dumped reigning Australian Open champion Sofia Kenin out of the competition with a 6-7(2), 6-3, 6-3 victory.
Meanwhile, France's Kristina Mladenovic beat Belarus' Aliaksandra Sasnovich 6-4, 6-3 while Katerina Siniakova came out top of the Czechs, beating countrywoman Karolina Muchova 4-6, 6-4, 0-6.
Elsewhere, Croatian Petra Martic, Estonia's Anett Kontaveit, Russia's Veronika Kudermetova and Belarusian Aryna Sabalenka all progressed into the round of 16.