Sanctioned Matchup Predictor
Joanna Ma vs Andrea McDonnell
Past Head-to-Head Rubbers (6)
| Winner | Loser | Score | Event | Rating Delta | |
|---|---|---|---|---|---|
| Andrea McDonnell | def. | Joanna Ma | 2009 Australian Veterans Championships (2009-10-24) | +24 | |
| Joanna Ma | def. | Andrea McDonnell | -8,5,7,8 | 2010 Australian Veterans Championships (2010-10-24) | +89 |
| Andrea McDonnell | def. | Joanna Ma | 9,6,9 | 2013 Australian Veterans Championships (2013-09-14) | +25 |
| Joanna Ma | def. | Andrea McDonnell | 11,9,-3,9 | 2014 Australian Veterans Championships (2014-10-25) | +9 |
| Joanna Ma | def. | Andrea McDonnell | 10,8,-5,10 | 2014 Australian Veterans Championships (2014-10-25) | +9 |
| Joanna Ma | def. | Andrea McDonnell | -7,6,4,5 | 2015 Australian Veterans Championships (2015-10-24) | +4 |