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Colby, David
Current rating: 1527

Grand Prix Seattle-Tacoma 2012 (DKA limited) starting rating: 1508
round table opponent (rating) result Δrating
1sealed 321 Nitka, David (1518) Won 2-1 +191527
top record: 1-0 new rating: 1527

Grand Prix Seattle 2009 (ARB standard) starting rating: 1498
round table opponent (rating) result Δrating
1standard 226 McGrath, Luke (1500) Won 2-0 +181516
2standard 251 Suh, Mike (1538) Won 2-0 +191535
3standard 66 Cunningham, Jeff (1794) Won 2-1 +221557
4standard 17 Ellis, Kenneth (1566) Lost 0-2 -181539
5standard 189 Gurney, Michael (1759) Lost 0-2 -141525
6standard 295 Ohlschwager, Andrew (1584) Lost 1-2 -171508
top average opponent: 1623record: 3-3 new rating: 1508

Grand Prix Los Angeles 2009 (extended) starting rating: 1517
round table opponent (rating) result Δrating
1extended 136 Mendez, Abraham (1500) Won 2-0 +181535
2extended 179 Chen, Stephen (1517) Lost 1-2 -191516
3extended 246 Peterson, Michael (1500) Lost 1-2 -181498
top average opponent: 1506record: 1-2 new rating: 1498

Grand Prix Vancouver 2008 (extended) starting rating: 1500
round table opponent (rating) result Δrating
1extended 16 Johnston, Vincent (1446) Lost 1-2 -191481
2extended 136 Walker, Andrew 2 (1481) Won 2-1 +181499
3extended 82 Lau, Brian (1499) Won 2-1 +181517
4extended 91 Neufeld, Peter (1518) Won 2-1 +181535
5extended 74 Chreptyk, Brandon (1537) Lost 0-2 -181517
top average opponent: 1496record: 3-2 new rating: 1517