Sanctioned Matchup Predictor
Ken Zhang vs Calvin Zhao
Past Head-to-Head Rubbers (3)
| Winner | Loser | Score | Event | Rating Delta | |
|---|---|---|---|---|---|
| Ken Zhang | def. | Calvin Zhao | 11,7,8 | 2025 GDTTA Spring Junior League Rnd 2 (2025-10-29) | +3 |
| Ken Zhang | def. | Calvin Zhao | 7,3,2 | 2026 GDTTA Junior League Winter Rnd 1 (2026-07-29) | +8 |
| Ken Zhang | def. | Calvin Zhao | 4,5,8 | 2026 GDTTA Junior League Winter Rnd 4 (2026-08-19) | +7 |