His backhand is usually hit two-handed with topspin, but he often uses a one-handed slice.
Topspin has the unusual ability to manipulate sparks, and can move them from one body to another.
Topspin serves are generally hit hard and aimed at a specific returner or part of the court.
The extra topspin made it difficult for batters to connect solidly.
Topspin greatly enhances the effectiveness of offensive lob but also makes the stroke more difficult.
As such, topspin is more effectively used on slower, higher bouncing surfaces such as clay.
Sundstrm was at his best on clay and achieved his strongest results on this surface, with his solid and heavy topspin groundstrokes from the baseline.
Sometimes his arm went straight over and continued straight down in the follow-through and then the batsmen had to tackle fierce topspin.
