Last week, you learned what SAP analytics is and how it's helping WTA players in real time on the court. Now take a look at the longer-term positive effects of having statistics at a coach's fingertips.

"Using SAP stats to review matches is an on-going thing," Daria Gavrilova's coach Nicole Pratt says. "What we use it for is to prepare for the next match, the next tournament, the year ahead…"

Having the information at the ready on the tablets helps coaches and players tailor the next match or practice.

"It's important that it's so quick because the next match is within 24 hours," Safarova says.

SAP also help convince more stubborn players, like Angelique Kerber, that the coach is right about a point he or she is making.

The next time you see a coach wielding a tablet during a WTA match, you'll know exactly what it's for.