From ATP's stats, sorted based on %1st serve points won:
2nd serve points won:
1st serve percentage:
Overall:
Hurkacz:
- Overall #1
- % 1st serve points won #1
- % 2nd serve points won #28
- 1st serve % #25
- 1st serve speed #1 (among the top 20; from the Tennis Insights graphic)
- 1st serve accuracy #1 (same as above)
Eubanks:
- Overall #2
- % 1st serve points won #21
- % 2nd serve points won #29
- 1st serve % #3
- 1st serve speed N/A (not inside the top 20)
- 1st serve accuracy N/A (not inside the top 20)
Zverev:
- Overall #3
- % 1st serve points won #24
- % 2nd serve points won #34
- 1st serve % #2
- 1st serve speed #2
- 1st serve accuracy #12
Tsitsipas:
- Overall #4
- % 1st serve points won #2
- % 2nd serve points won #7
- 1st serve % #33
- 1st serve speed #4
- 1st serve accuracy #6
Djokovic:
- Overall #5
- % 1st serve points won #15
- % 2nd serve points won #1
- 1st serve % #23
- 1st serve speed #13
- 1st serve accuracy #2
Sinner:
- Overall #7
- % 1st serve points won #6
- % 2nd serve points won #4
- 1st serve % #61
- 1st serve speed #9
- 1st serve accuracy #10
Alcaraz:
- Overall #9
- % 1st serve points won #32
- % 2nd serve points won #2
- 1st serve % #13
- 1st serve speed #17
- 1st serve accuracy #18
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Indeed different ways how players get ranked highly based on their serving.
Hurkacz (overall #1) serves fast balls close to the lines. This means his 1st serve % is only #25 but it works when the rockets go in. Not top tier behind his 2nd serve (#28).
Zverev (overall #3) also serves fast balls but with more margin. His 1st serve % is #2 overall.
Tsitsipas (overall #4) seems similar to Hurkacz. Tries to go closer to the lines, which reduces the 1st serve % but is nonetheless successful when he finds the spots. Also decent behind his 2nd serve (#7; Hurkacz #28).
Djokovic (overall #5) doesn't have the size of the guys before him. Less pace, but he goes close to the lines. This impacts his 1st serve %. 2nd serve is where Djokovic truly shines, being ranked #1 in % of 2nd serve points won.
Sinner (overall #7) is interesting in that he is listed at same height as Djokovic. He goes for a little more than Djokovic (roughly 2 mph more) but is around 3 to 5 mph behind the taller guys. 1st serve percentage is subpar (#61), but overall this works for him fairly well. #6 in % 1st serve points won. Likewise solid behind his 2nd serve at #4.
Alcaraz (overall #9) puts a good amount of his serves in (#13), but this comes at a cost of both speed and margins in that his serves land rather far from the edges of the box. Currently he is only #32 in % of 1st serve points won. The 2nd serve is where he shines, being ranked #2 behind Djokovic.
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What would further be interesting to see is how much action/movement/spin the players put on the ball. Sth that you can also use to level up your serve.
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Also, check this one out. From Rotterdam where Sinner was serving much more closer to the edges of the box than on average. See the 1st picture (serve and return quality) and then the 2nd one (forehand and backhand quality):
Serving well is important, but returning well is even more important? ...when you have solid groundstrokes. Just need to be able to neutralize the serve to then do damage.