Top seed Naomi Osaka admitted that a 10-minute toilet break by Victoria Azarenka helped her to a second successive Roland Garros great escape on Thursday.
The Japanese star, bidding to add the French Open to her US and Australian Open titles, battled back from a set and a break down to defeat Azarenka 4-6, 7-5, 6-3.
Both players left Court Suzanne Lenglen before the start of the third set for toilet breaks.
Osaka returned quickly but former world number one and two-time major winner Azarenka disappeared for close on to 11 minutes.
While 21-year-old Osaka bided her time, many observers wondered if the lengthy delay was a deliberate act of gamesmanship.
If it was, it backfired.
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"When I went to the bathroom to change, I was freaking out, because I didn't want to get a code violation," explained Osaka.
"So I was, like, rushing and stuff. And then I came back and saw that she wasn't back. That kind of just relaxed me.
"I was in such a rush changing, my hands were shaking during that entire time.
So when I came back and saw she wasn't back, I just had a little bit of time to calm down and think about what I really wanted to do during the set. So, for me, I was fine."
"But I feel like I have to win. I acknowledge that's kind of a toxic trait, but, like, it's gotten me this far."
"She deserves to be where she is -- she is very powerful and explosive."