S. Klaassen is a ATP tennis player. Current hard-court ELO 1450 (11-6). Recent form: 9-6 over the last 15 matches.
| Date | | Opponent | Score | Event |
|---|
| July 11, 2026 |
L |
S. Johnson |
2 - 0 |
M15 Rancho Santa Fe, CA · hard |
| July 10, 2026 |
W |
J. Anthrop |
1 - 2 |
M15 Rancho Santa Fe, CA · hard |
| July 9, 2026 |
W |
T. Dean |
2 - 0 |
M15 Rancho Santa Fe, CA · hard |
| July 8, 2026 |
W |
W. Zhang |
2 - 0 |
M15 Rancho Santa Fe, CA · hard |
| July 2, 2026 |
L |
V. Gogineni |
2 - 1 |
M15 San Diego, CA · hard |
| July 1, 2026 |
W |
M. Miladinovic |
2 - 0 |
M15 San Diego, CA · hard |
| June 24, 2026 |
L |
L. Pow |
1 - 2 |
M15 Claremont (Usa) |
| June 18, 2026 |
L |
N. Zamora |
2 - 0 |
M15 Irvine · hard |
| June 16, 2026 |
W |
E. Bynoe |
0 - 2 |
M15 Irvine · hard |
| July 10, 2025 |
L |
E. Vanshelboim |
1 - 2 |
M25 The Hague · clay |
| July 9, 2025 |
W |
A. Raynel |
0 - 2 |
M25 The Hague · clay |
| June 15, 2025 |
L |
T. Svajda |
2 - 0 |
M15 San Diego, CA 3 · hard |
| June 14, 2025 |
W |
S. Danilov |
1 - 2 |
M15 San Diego, CA 3 · hard |
| June 13, 2025 |
W |
Q. Vandecasteele |
1 - 2 |
M15 San Diego, CA 3 · hard |
| June 12, 2025 |
W |
H. Rivera |
0 - 2 |
M15 San Diego, CA 3 · hard |