If you want to feel confident about finishing points with your forehand, that’s what you have to do. You won’t turn your forehand into a hammer overnight. I’m still working on it, and I’m 43.

Backhands, especially two-handers, are more compact so less can go awry. “The forehand is a bigger swing and a more complex shot technically,” said Michael Russell, who coaches Taylor Fritz.

For example, I often play against a guy with a strong forehand but a relatively weak backhand. But he's smart and he uses every opportunity to get a little extra practice on that side.

Gauff's serve struggles have reemerged of late after a period of improvement with coach Matt Daly, who is now off her team.

Coco Gauff turns to a biomechanics expert, who helped rival Aryna Sabalenka overcome her serving troubles, on the eve of the ...