Instead she received only a warning from the match umpire. Muguruza refused to blame the heat, which soared to 39 degrees Celsius, the blister, or a strapped right thigh for her earliest loss in Melbourne since a second-round thrashing by Serena Williams five years ago. It was an honest appraisal. Apart from when she recovered from 5-2 in the first set and a brief rally at the end of the second, she was inferior against the former world doubles No 1 whose box of tricks featured several shots not found in any tennis textbook. Hsieh, who wobbled briefly when 5-2 ahead in the second set, was especially productive on the backhand side, guiding 12 winners past her opponent, the last one coming on match point.
Wow. Just...wow. No. 82 Su-Wei #Hsieh shocks third seed Garbine #Muguruza in a straight sets 7-6(1) 6-4 victory. Muguruza went 8/32 on second serve while Hsieh went 15/29.#AusOpen pic.twitter.com/Au9g0CRH0CJanuary 18, 2018
Hsieh will face a player very much in her mould in Poland's 26th seed Agnieszka Radwanska Saturday. Muguruza will rue the first set tiebreak that she allowed to get away from her all too easily, having dug deep to claw herself back into the set. She served a double-fault at 1-4 and then was left standing by a backhand jab down the line as Hsieh moved 6-1 ahead before Muguruza wafted a forehand over the line to concede the set. Muguruza unravelled in the second set and looked cooked at 2-5 before some late Hsieh nerves gave her a glimmer of hope. Hsieh held it together when she served at 5-4, however, as Muguruza joined fellow seeds Venus, Sloane Stephens, Coco Vandeweghe, Kristina Mladenovic and Johanna Konta through the exit door.
It's over for @GarbiMuguruza at the @AustralianOpen. The former RG champion suffered badly from the heat and lost to Su-Wei Hsieh 7-6 6-4/Gros coup de chaud pour "Garbi"qui s'incline au 2e tour, battue par #Hsieh. #AusOpen ? ©Corinne Dubreuil/FFT pic.twitter.com/3C2OeBZL2d— Roland-Garros (@rolandgarros) January 18, 2018