Angelique Kerber is a dominant Retriever and in her case more a Counterpuncher. In total, 51% of her points are won by the errors of her rivals and this result is above the general average of the WTA players. When compared with her opponents she makes on average fewer errors with every possible shots: serve, return, backhand forehand & volley.
Retriever / High
Angelique Kerber cannot be qualified as a Server because her ratio of aces/servie winners on first serve is below average (13%). Most of the time her matches are won from the back of the court and not with that shot.
Server / Medium-low
Angelique Kerber is nothing but an Offensive player. Only 5% of her points are won at the net (with or without a volley to play) and this result is far below average. Besides, she is not even so effective when she moves forward winning only 53% of the points.
Offensive / Very low
The way Angelique Kerber Retrieves is with Tempo close to her baseline (like a Counterpuncher). However, besides making fewer errors than her rivals with every possible shots, she still manages to get a ratio of forehand & backhand as good as the one of her opponents. It means that she is not only a Retriever but also a Tempo player capable of winning points with her own actions and that makes her a top player.
Tempo / Medium
Because of her court position close to her baseline and her flat shots, Angelique Kerber is more a Tempo player than a Puncher. Punchers usually possesses better forehand than backhand and this shot is played with much more topspin than what she does.