When compared with her rivals, Samantha Stosur takes by far her biggest edge with the serve. She makes on average 60% more aces/service winners and 20% less double faults. Because of that we can say that she is a Server.
Server / High
Samatha Stosur comes in more than the average of the WTA players but we can's say that she is that effective at the net. The percentage of points won and the volley points/errors ratio is below average. In her case, the forehand approach is better than the quality of her volley.
Offensive / Medium
Even though Samantha Stosur plays the backhand rather close to the baseline, she isn't a Tempo player at all. The Punching game style is so dominant with her that the ratio of points won with the backhand & backhand return is far below average.
Tempo / Low
Samantha Stosur's second best shot is the Punching forehand. She makes on average 20% more points with that shot than her rivals and this is especially with the inside out & inside in forehand that she is the most aggressive.
Puncher / High
Having such a big serve & forehand and coming in more than average, Samantha Stosur isn't a Retriever. Nonetheless, when the baseline rallies extend over 8 shots she gets good results.