Man, how deep does that young broad Madison Keys hit the ball!! To defeat her, Serena will need to move fast and build momentum out of that big mamma aging body of hers.
Here is a short info about responding to deep balls.
Should she move back?
+ More time for preparation
+ Higher point of contact
+ Ability to hit aggressively
- More movement
- Longer distance for the ball to travel
Or should she stay close to the baseline?
+ Reduce opponent reaction time
+ Shorter distance to move to the net after successful shot
+ Playing with opponent power
- More errors
- Bending knees deeply
- Shortening the backswing
I reckon Keys has a good chance against Serena. I can't wait to see this match either, fully sick.