Nineteen-year-old Jelena Ostapenko showed great resolve in holding off Petra Kvitova for a 6-4 4-6 6-3 Thursday as the 2014 Wimbledon junior champion defeated the 2014 Wimbledon champion in Birmingham at the Aegon Classic. The SAP Tennis Analytics for Coaches shows one of the keys to her victory was forcing Kvitova to rely heavily on her backhand during the final set.

Kvitova hit 61% of shots during third set rallies from her backhand Thursday. While she only had one unforced error from that side, she did not hit any backhand winners during that final set.

That high percentage of backhand shots for the left-handed Kvitova really stands out when compared to the 36% of rally shots from the backhand side in the second set, which she won. During her straight sets opening round win, Kvitova hit just 40% of her rally shots from the backhand side.

Ostapenko kept Kvitova under pressure the entire third set. In addition to dictating play to the backhand, she had break points in all five of Kvitova’s service games, converting three, while also winning eight of nine second serve points.

The SAP Coaches View combines scoring information direct from the chair umpire with tracking data from HawkEye to allow for an in depth look at five different aspects of a match. Each tracking option can be filtered to narrow the focus to specific situations within a match, such as break points. This information is available directly to coaches in real-time during a match on their SAP tablet and also available to them online after matches.

“Rally hit from” tracking shows where each ball is struck during a rally. The display differentiates between forehands and backhands. This data can be filtered by a particular score or to only show winners, unforced errors, the last shot of a rally or the third shot (first rally ball hit by the server).

For Ostapenko on Thursday, forcing Kvitova to hit from her backhand side was a winning strategy.