Table 2. Median (IQR) of match statistics for junior and professional tennis players at the 2017 Australian Open.
| Match Statistic |
Junior Boys |
Professional Men |
Junior Girls |
Professional Women |
| Sample Size (matches) |
62 |
124 |
63 |
127 |
| Service Points Won |
| Percentagea |
59.3 (51.1-66.0) |
63.7 (59.2-69.0) |
55.0 (50.2-61.4) |
57.1 (51.2-63.9) |
| Clutch |
55.8 (31.2-74.7) |
56.5 (0.0-70.2) |
57.0 (45.1-66.0) |
56.9 (44.7-68.2) |
| First Service Points |
| Percentageb |
61.6 (55.1-65.5) |
59.6 (56.1-65.3) |
58.0 (52.1-63.5) |
60.3 (55.7-65.9) |
| Clutch |
61.9 (46.3-71.8) |
58.5 (0.0-69.0) |
59.8 (47.8-69.0) |
62.2 (51.7-70.5) |
| First Service Points Won |
| Percentagea |
66.7 (59.3-74.2) |
72.1 (66.7-78.4) |
64.1 (55.6-72.8) |
64.2 (57.8-72.7) |
| Clutch |
62.6 (33.1-77.6) |
63.0 (0.0-77.7) |
61.9 (50.6-72.7) |
63.2 (48.8-74.0) |
| Second Service Points Won |
| Percentagea |
47.3 (41.0-55.1) |
50.4 (44.1-56.8) |
44.3 (39.7-52.4) |
45.6 (38.5-53.3) |
| Clutch |
41.6 (15.8-57.2) |
42.1 (0.0-56.9) |
44.2 (30.3-56.8) |
42.8 (28.9-54.9) |
| Aces |
| Percentagea,b |
3.6 (1.5-6.6) |
8.0 (4.7-12.1) |
2.8 (0.0-4.5) |
3.8 (1.8-6.9) |
| Clutcha,b |
0.0 (0.0-5.2) |
2.9 (0.0-9.5) |
1.0 (0.0-4.0) |
2.9 (0.0-7.1) |
| Double Faults |
| Percentagea |
4.9 (2.7-7.5) |
3.8 (2.3-5.3) |
5.4 (3.2-8.4) |
5.0 (3.2-7.9) |
| Clutcha |
3.0 (0.0-7.1) |
1.6 (0.0-4.7) |
4.1 (0.2-8.1) |
4.0 (0.0-7.5) |
| Break Points |
| Percentageb |
8.8 (3.5-12.7) |
7.5 (4.6-10.7) |
9.7 (4.9-14.1) |
10.4 (6.5-14.3) |
| Clutcha |
20.5 (0.0-35.8) |
14.6 (0.0-26.2) |
11.9 (0.0-19.8) |
13.2 (0.0-20.5) |
| Break Points Won |
| Percentage |
42.9 (25.0-57.1) |
37.5 (25.0-50.0) |
44.4 (33.3-55.6) |
42.9 (33.3-54.2) |
| Clutcha,b |
42.2 (11.0-66.3) |
34.1 (6.7-53.2) |
46.1 (28.2-63.0) |
39.8 (19.5-56.3) |
| Net Points |
| Percentagea,b |
7.9 (4.7-12.4) |
10.1 (7.1-13.6) |
4.9 (1.7-7.8) |
6.3 (4.1-9.9) |
| Clutch |
4.9 (0.0-11.1) |
4.8 (0.0-13.8) |
3.5 (0.0-7.4) |
4.7 (0.0-9.3) |
| Net Points Won |
| Percentagea,b |
62.5 (50.0-75.0) |
65.3 (57.1-72.7) |
63.6 (50.0-77.8) |
66.7 (55.3-80.0) |
| Clutchb |
47.2 (0.0-73.6) |
53.8 (0.0-72.5) |
51.7 (0.0-73.1) |
64.0 (3.6-81.2) |
| Total Winners |
| Percentage |
39.0 (29.6-48.7) |
49.7 (41.6-57.2) |
34.0 (25.2-42.3) |
42.9 (35.7-50.0) |
| Clutcha,b |
30.3 (0.0-47.5) |
35.9 (0.0-55.1) |
30.1 (1.0-39.8) |
38.5 (18.2-48.6) |
| Total Unforced Errors |
| Percentagea,b |
61.0 (51.3-70.4) |
50.3 (42.8-58.4) |
65.8 (57.5-73.9) |
57.1 (50.0-64.3) |
| Clutch |
52.7 (0.0-71.8) |
38.1 (0.0-55.9) |
64.6 (44.0-76.3) |
54.1 (34.4-64.6) |
| Total Points Won |
| Percentagea,b |
53.0 (45.3-60.8) |
50.8 (45.8-55.4) |
52.7 (46.5-60.2) |
51.0 (45.0-56.6) |
| Clutchb |
49.8 (25.9-65.4) |
42.8 (0.0-57.3) |
49.2 (39.7-60.5) |
48.0 (36.3-59.3) |
b Indicates a difference between junior girls and professional women at the 5% level or less
a Indicates a difference between junior boys and professional men at the 5% level or less
