Acheson, Mark
Current rating: 1639

Grand Prix Montreal 2011 (M12 limited) starting rating: 1655
round table opponent (rating) result Δrating
1sealed 443 Keeping, Matt (1500) Won 2-0 +161671
2sealed 379 Kline, Charles (1471) Won 2-0 +141685
3sealed 352 Stanev, Victor (1536) Lost 1-2 -211664
4sealed 497 Chang, Morgan (1488) Lost 0-2 -211643
5sealed 483 Morrill, Alex (1549) Won 2-1 +161659
6sealed 437 Dupuis Howard, James (1520) Lost 1-2 -201639
top average opponent: 1511record: 3-3 new rating: 1639

Grand Prix Tampa 2009 (ZEN limited) starting rating: 1662
round table opponent (rating) result Δrating
3sealed 56 Skinner, John (1509) Lost 0-2 -211641
4sealed 173 Aten, Timothy (1790) Lost 0-2 -151626
5sealed 274 Landress, Bryan (1498) Won 2-1 +161642
6sealed 182 Donlan, Jacob (1518) Won 2-0 +161658
7sealed 99 Barbour, Jermaine (1521) Won 2-0 +151673
8sealed 62 Vargas, Andrew (1696) Lost 1-2 -181655
top average opponent: 1589record: 3-3 new rating: 1655

Grand Prix Boston 2009 (M10 limited) starting rating: 1539
round table opponent (rating) result Δrating
1sealed 51 Iramain, Jorge (1462) Won 2-0 +161555
2sealed 107 Scheier, Garrett C (1484) Won 2-0 +171572
3sealed 58 Baglio, Matthew (1534) Won 2-1 +171589
4sealed 48 Asulin, Jordan (1587) Won 2-0 +181607
5sealed 24 Sharkey, Andrew (1575) Won 2-1 +181625
6sealed 8 Berger, Eric (1654) Lost 1-2 -181607
7sealed 40 Lewis, Scott (1577) Won 2-1 +181625
8sealed 8 Beloin, Dave J (1591) Won 2-0 +171642
9sealed 16 Skarren, Frank (1606) Lost 0-2 -191623
10draft 33 Mead, Forrest (1670) Won 2-1 +191642
11draft 63 Turtenwald, Owen (1882) Lost 0-2 -141628
12draft 37 Seder, Robert (1675) Won 2-1 +191647
13draft 65 Gottschalk, Evan N (1595) Won 2-0 +171664
14draft 17 Anderson, Marc (1588) Won 2-0 +171681
15draft 23 Costa, Matthew (1639) Lost 1-2 -191662
top average opponent: 1608record: 11-4 new rating: 1662

Grand Prix New Jersey 2006 (TSP limited) starting rating: 1576
round table opponent (rating) result Δrating
2sealed 77 Gress, Bobby (1518) Won 2-1 +161592
3sealed 65 Daoust, Guillaume (1638) Lost 1-2 -171575
4sealed 257 Hilscher, James (1517) Lost 1-2 -191556
5sealed 212 Folinus, Jeff (1579) Lost 0-2 -171539
top average opponent: 1563record: 1-3 new rating: 1539

Grand Prix Toronto 2006 (DIS limited) starting rating: 1523
round table opponent (rating) result Δrating
1sealed 140 Bailie, Scott H (1500) Draw 1-1 01523
2sealed 126 Ng, Matthew (1500) Won 2-1 +171540
3sealed 72 Richardson, Robert (1537) Won 2-1 +181558
4sealed 66 Brockway, Brian (1610) Draw 1-1 +11559
5sealed 101 Chan, Eric (1535) Won 2-0 +181577
6sealed 64 Mathews, Paul (1528) Won 2-1 +171594
7sealed 38 Sanchez, Kyle (1583) Lost 1-2 -181576
top average opponent: 1542record: 4-1-2 new rating: 1576

Grand Prix Detroit 2005 (BOK limited) starting rating: 1500
round table opponent (rating) result Δrating
1sealed 62 Wcisel, Jim (1500) Won 2-1 +181518
2sealed 114 May, Ethan (1516) Won 2-0 +181536
3sealed 12 Selinger, Rick (1571) Won 2-0 +191555
4sealed 47 Jacob, Michael (1663) Lost 0-2 -161539
5sealed 43 Nagy, Stephen (1603) Won 2-0 +191558
6sealed 29 Kneece, James (1506) Lost 0-2 -191539
7sealed 73 Cato, Daniel (1660) Lost 1-2 -161523
top average opponent: 1574record: 4-3 new rating: 1523