event | round | table | player one | result | player two |
Grand Prix Stuttgart 2007 | 13 | 44 | Joens, Klaus (1946) | Won 2-0 | Mueller, Andre (1831) |
Grand Prix Amsterdam 2011 | 8 | 693 | Joens, Klaus (1800) | Won 2-0 | Mueller, Andre (1742) |
Grand Prix London 2013 | 8 | 458 | Joens, Klaus (1732) | Lost 0-2 | Mueller, Andre (1722) |