Sanctioned Matchup Predictor
Robert Koppelhuber vs Alex Chang
Past Head-to-Head Rubbers (4)
| Winner | Loser | Score | Event | Rating Delta | |
|---|---|---|---|---|---|
| Alex Chang | def. | Robert Koppelhuber | 3-0 | NTTC 2017 Autumn Comp C Grade R1 (2017-02-14) | +2 |
| Alex Chang | def. | Robert Koppelhuber | 3-0 | NTTC 2017 Autumn Comp C Grade R6 (2017-03-21) | 0 |
| Alex Chang | def. | Robert Koppelhuber | 6,6,5 | NTTC 2021 Autumn Comp B Grade R7 (2021-05-04) | +1 |
| Alex Chang | def. | Robert Koppelhuber | 4,2,7 | NTTC 2024 Autumn Comp Grade A & B Week 4 (2024-04-08) | +1 |