A four-state tennis groundstroke landing map in hand-rolled SVG — the opponent's half cut into short / mid-court / deep bands across the left, middle and right thirds, shaded by volume, with the "beyond the service box" and "middle third" reads printed above it and a forehand / backhand filter that re-derives both.
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190 groundstrokes landed in · 75% of 253 hit the court (63 netted, long or wide)
Point at a zone — or focus the court and arrow around — to read its exact count.
0> 0≥ 9.25≥ 18.5≥ 27.75groundstrokesone landing
Depth is measured from the net: the service line at 6.40 m splits the service box from the 5.485 m of court behind it, and the halfway cut at 3.20 m separates short from mid-court. The thirds are cuts of the 8.23 m singles width, so the doubles alleys stay unshaded — a ball there is out in singles. Middle-third balls cross the lowest part of the net (0.914 m at the centre) and leave the opponent standing still, which is why that read wants to be small while the deep read wants to be large.
Groundstroke depth zones: M. Okada, Club league · 6-4, 6-3 def. T. Whelan. The opponent's half seen from behind the hitter, cut into three depth bands — short inside 3.2 metres, mid-court out to the 6.4 metre service line, deep beyond it — across the left, middle and right thirds of the 8.23 metre singles width. 190 groundstrokes landed in, across 9 of 9 zones. 52% landed beyond the service box, higher is better; 39% landed in the middle third, lower is better. 63 more groundstrokes never landed in, so 75% of 253 hit the court. Busiest zone — Deep, left third: 37 groundstrokes, 19% of the 190 that landed in.
All nine zones of the opponent's half, net to baseline, with the groundstrokes that landed in each and its share of the 190 that landed in.
Depth band
Third
groundstrokes
Share
Short — 0 to 3.20 m from the net
left third
3
2%
Short — 0 to 3.20 m from the net
middle third
10
5%
Short — 0 to 3.20 m from the net
right third
3
2%
Mid-court — 3.20 to 6.40 m from the net
left third
19
10%
Mid-court — 3.20 to 6.40 m from the net
middle third
33
17%
Mid-court — 3.20 to 6.40 m from the net
right third
24
13%
Deep — beyond the 6.40 m service line
left third
37
19%
Deep — beyond the 6.40 m service line
middle third
31
16%
Deep — beyond the 6.40 m service line
right third
30
16%
empty
Groundstroke depth zones
M. Okada · Club league · 6-4, 6-3 def. T. Whelan
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Nine zones — short, mid-court and deep across the left, middle and right thirds — fill in as rally balls are logged.
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Groundstroke depth zones
M. Okada · Club league · 6-4, 6-3 def. T. Whelan
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Groundstroke depth zones
M. Okada · Club league · 6-4, 6-3 def. T. Whelan
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ready · pre-binned zone rows
Groundstroke depth zones
J. Ferreira · Sunday practice sets · 2 hours
51%
beyond the service box
86 of 167 · higher is better
40%
in the middle third
67 of 167 · lower is better
167 groundstrokes landed in · 75% of 222 hit the court (55 netted, long or wide)
Point at a zone — or focus the court and arrow around — to read its exact count.
0> 0≥ 9≥ 18≥ 27groundstrokes
Depth is measured from the net: the service line at 6.40 m splits the service box from the 5.485 m of court behind it, and the halfway cut at 3.20 m separates short from mid-court. The thirds are cuts of the 8.23 m singles width, so the doubles alleys stay unshaded — a ball there is out in singles. Middle-third balls cross the lowest part of the net (0.914 m at the centre) and leave the opponent standing still, which is why that read wants to be small while the deep read wants to be large.
Groundstroke depth zones: J. Ferreira, Sunday practice sets · 2 hours. The opponent's half seen from behind the hitter, cut into three depth bands — short inside 3.2 metres, mid-court out to the 6.4 metre service line, deep beyond it — across the left, middle and right thirds of the 8.23 metre singles width. 167 groundstrokes landed in, across 9 of 9 zones. 51% landed beyond the service box, higher is better; 40% landed in the middle third, lower is better. 55 more groundstrokes never landed in, so 75% of 222 hit the court. Busiest zone — Deep, middle third: 36 groundstrokes, 21% of the 167 that landed in.
All nine zones of the opponent's half, net to baseline, with the groundstrokes that landed in each and its share of the 167 that landed in.
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