If Wimbledon kept data on impossible-to-make shots, Su-Wei Hsieh would dominate the stat.
Hsieh's almost two-and-a-half-hour match against Halep on Saturday was one of the most entertaining thrillers of the first week at All England.
Upsets at Wimbledon reached a zenith on Saturday at the All England Club when more than half of the seeds in play were defeated by unseeded players, including the toppling of the world No. 1.
A lengthy first game in which Halep finally broke when Hsieh sent a forehand long set the tone in the early stages where holding serve proved hard.
Hsieh's serve is hardly a weapon - her second serves often crawling over the net on a day when she was she was broken seven times.
"Inside, I was, like, dying", the 24-year-old Belgian said.
"It's fantastic. I was 2-5 down in the final set but the crowd pushed me to fight".
"I was leading the match, I was up, and I couldn't finish it", said the 2014 semi-finalist.
The Taiwanese was right about one thing, Halep did indeed fight hard.
"It is awesome", Hsieh said.
Simona Halep is the top seed in one of the most open Wimbledon draws in history, with her and Pliskova the last top ten seeds standing. And just like that the ever-unpredictable women's draw has been thrown open again.
The 26-year-old French Open champion never got to grips with the unorthodox Hsieh and lost 3-6 6-4 7-5 despite having a match point in the deciding set on a balmy Court One. The only past champion at the grass-court tournament left is Serena Williams.
"Of course, it's very positive to be in the second week, winning three matches".
In contrast to her fellow top ten seeds, Halep has been doing things pretty easily so far at this year's Championships. Before her, Wozniacki's star faded after she won the Australian Open crown in January.
Then there is Stephens, the US Open champion of past year who struggled for form immediately after winning her home Slam, losing in the first round of the next four tournaments (including the Australian Open).
Van Uytvanck began the week with a 1-4 Wimbledon record and only one Grand Slam quarter-final appearance to her name, while Muguruza has two major titles, including the 2016 French Open, and was the runner-up at the All England Club in 2015, but none of that mattered.
"This is the first time I have beaten the world number one, it is unbelievable", Hsieh said. She hits everything close to the line.
Hsieh saved the match point with a backhand victor before holding for 5-5 and breaking Halep in the next game.
'Definitely, I gave everything I had on the game side. I was fighting till the end for every ball.
"For me, I just try to enjoy the tennis, enjoy the city, enjoy the food". "Mentally, I was exhausted".