You will not see a crazier women's match than the one wrapping up now between Madison Keys (15) and Ana Ivanovic (20).
Hard fought first set, no breaks or I think even break points until Ivanovic breaks at love to win 6-4.
Then Ivanovic holds to open the second set.
Then on the changeover there is some commotion in the stands and it turns out that Ivanovic's coach (also Andy Murray's wife's dad) has collapsed and there is a pool of blood there. Everything understandably comes to a halt, they eventually get a stretcher there, render him immobile and take him to the hospital (still a bit unclear what happened, maybe a heart attack and then he hit his head, but reports have him conscious at least).
An hour later, they resume the match (I believe they were given the choice to postpone until tomorrow but both choose to continue).
They come back, Ivanovic looks good and breaks, 2-0.
Keys wins the next two games, 2-2.
Ivanovic wins the next two, up 4-2, serving, 2 games away from closing it out in straight sets.
Except Keys wins the next four games, evening the match at a set apiece.
Ivanovic comes out smoking in the third, going up 3-0.
Keys comes back and wins five straight games to go up 5-3.
Ivanovic holds to cut it to 5-4.
Finally after a very tight and nervous service game with multiple deuces, Keys holds on, 4-6, 6-4, 6-4. 104 total points to 100 for Keys.