IT was almost beyond belief as the bett1Open draw was blown wide open following some massive upsets on a huge day of grass court action. The top three seeds were all ousted for the tournament in upset results to leave the title race at the event up in the air. The only seed to advance through to the quarter finals thus far was fifth seed Belinda Bencic who toppled Croatian Petra Martic in straight sets, 6-3 6-4.
In the other matches, American Madison Keys caused a boilover against top seed Aryna Sabalenka, with the Belarusian newly crowned world number four losing in one hour and 56 minutes. Keys served eight aces and won 71.7 per cent of her first serve points off a 67.9 per cent clip, also saving four of six break point opportunities.
By comparison, Sabalenka won 68.3 per cent of her first serve points, and whilst she also won 47.7 per cent of her second serve points, only served at a 57.7 per cent efficiency. She also faced 14 break points, and whilst she saved 10 of them, went down in three sets, 6-4 1-6 7-5.
Keys hit 31 winners to just 17 unforced errors in the match, standing up against the powerful Sabalenka. Most impressively, despite a disappointing second set, Keys bounced back to win the third and deciding set, breaking Sabalenka in he final game of the match off the back of a couple of unforced errors from the Belarusian.
Meanwhile fellow top three seeds, Elina Svitolina and Bianca Andreescu also suffered defeats at the hands of lower ranked opponents. Svitolina went down to Ekaterina Alexandrova, with the Ukrainian second seed unable to overcome her Russian opponent, losing 6-4 7-5. Canadian third seed Andreescu fell to Frenchwoman Alize Cornet in straight sets 7-6 7-5.
At the Viking Classic, third seed Donna Vekic was the highest ranked player out on court, and she made her way through to the quarter finals with a come-from-behind win over Italian Camila Giorgi. Vekic won 2-6 6-3 6-4 to book her spot in the quarter finals following a huge two hours and 28 minutes on court. The Croatian was one of three winners to advance following two-hour plus victories.
Coco Vandeweghe overcame Australian Ajla Tomljanovic in the battle of the unseeded talents, with the American bouncing back in a come-from-behind win, 4-6 6-4 6-3 in two hours and 18 minutes. Similarly, Kristina Mladenovic also won in a come-from-behind situation, overcoming compatriot and seventh seed Fiona Ferro in an all-French duel, saluting 3-6 6-3 6-4 in two hours and 11 minutes. The other Frenchwoman out on court – Caroline Garcia – did not have as much fun, bundled out by eighth seed Czech Marie Bouzkova who won easily 6-3 6-0. In the other match, home nation player Heather Watson won via retirement with a 5-2 triumph over Zhang Shuai.
BETT1OPEN ROUND OF 16 RESULTS:
Madison Keys (USA) defeated  Aryna Sabalenka (BLR) 6-4 1-6 7-5
Ekaterina Alexandrova (RUS) defeated  Elina Svitolina (UKR) 6-4 7-5
Alize Cornet (FRA) defeated  Bianca Andreescu (CAN) 7-6 7-5
 Belinda Bencic (SUI) defeated Petra Martic (CRO) 6-3 6-4
VIKING CLASSIC ROUND OF 16 RESULTS:
 Donna Vekic (CRO) defeated Camila Giorgi (ITA) 2-6 6-3 6-4
Heather Watson (GBR) defeated Zhang Shuai (CHN) 5-2 RET
Kristina Mladenovic (FRA) defeated  Fiona Ferro (FRA) 3-6- 6-3 6-4
 Marie Bouzkova (CZE) defeated Caroline Garcia (FRA) 6-3 6-0
Coco Vandeweghe (USA) defeated Ajla Tomljanovic (AUS) 4-6 6-4 6-3
Picture credit: Jimmie48/WTA