| event | round | table | player one | result | player two |
| Grand Prix Atlantic City 2013 | 15 | 2 | Stern, Jon (1947) | Lost 0-2 | Costa, Matthew (1900) |
| Grand Prix Atlantic City 2013 | Q | Stern, Jon (1928) | Won 2-0 | Costa, Matthew (1919) | |
| Grand Prix Quebec City 2013 | 11 | 41 | Stern, Jon (2029) | Lost 0-2 | Costa, Matthew (1799) |
| Grand Prix Baltimore 2014 | 13 | 47 | Stern, Jon (1967) | Lost 0-2 | Costa, Matthew (2018) |
| Grand Prix Toronto 2015 | 8 | 40 | Stern, Jon (1938) | Won 2-0 | Costa, Matthew (1944) |