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Diefendorf, Brian
Current rating: 1641

Grand Prix Columbus 2010 (legacy) starting rating: 1656
round table opponent (rating) result Δrating
2legacy 55 Siftar, Nate (1595) Won 2-0 +171673
3legacy 62 Mascioli, Chris (1573) Won 2-0 +161689
4legacy 18 Jordan, Jason (1489) Draw 1-1 -41685
5legacy 38 Antrim, Michael (1500) Lost 0-1 -211664
6legacy 92 Wanich, Mark (1539) Draw 1-1 -21662
7legacy 130 Wright, Joel (1521) Lost 0-2 -211641
top average opponent: 1536record: 2-2-2 new rating: 1641

Grand Prix Washington DC 2010 (ROE standard) starting rating: 1654
round table opponent (rating) result Δrating
1standard 674 Hanley, Kevin (1486) Won 2-0 +151669
2standard 642 Ng, Joseph (1518) Won 2-0 +151684
3standard 641 Cavanagh, Kevin (1536) Won 2-1 +161700
4standard 638 Martin, Bob (1500) Won 2-0 +141714
5standard 636 Wagener, Joshua (1762) Lost 1-2 -171697
6standard 637 Villamizar, Daniel (1536) Lost 0-2 -211676
7standard 721 Schweitzer, Kyle (1554) Lost 0-2 -201656
top average opponent: 1556record: 4-3 new rating: 1656

Grand Prix Chicago 2009 (legacy) starting rating: 1664
round table opponent (rating) result Δrating
3legacy 35 Gaudard, Jason (1641) Won 2-0 +181682
4legacy 47 Johnson-Epstein, Jasper (1654) Won 2-1 +171699
5legacy 33 Evans, Dillon (1503) Won 2-0 +151714
6legacy 7 Kowal, Brian (1716) Lost 1-2 -181696
7legacy 76 Yam, Philip (1595) Lost 1-2 -201676
8legacy 157 Mink, James (1458) Lost 1-2 -221654
top average opponent: 1594record: 3-3 new rating: 1654

Grand Prix Philadelphia 2008 (extended) starting rating: 1645
round table opponent (rating) result Δrating
2extended 103 Littletin, Matt (1557) Lost 1-2 -201625
3extended 282 Moore, John B (1499) Won 2-0 +161641
4extended 205 Sears, Van (1517) Won 2-1 +161657
5extended 198 Breedwell, Brian O (1541) Lost 0-2 -211636
6extended 192 Navickas, Justin D (1596) Won 2-0 +181654
7extended 188 Pearlman, Steven (1490) Lost 0-1 -211633
8extended 162 Torres, Sergio (1516) Won 2-0 +161649
9extended 120 Smith, Cedric (1522) Won 2-0 +151664
top average opponent: 1530record: 5-3 new rating: 1664

Grand Prix Columbus 2007 (legacy) starting rating: 1542
round table opponent (rating) result Δrating
1legacy 202 Haffner, David L (1500) Draw 1-1 -11541
2legacy 229 Wong, Ben (1501) Won 2-0 +171558
3legacy 148 Ramsey, Nicholas (1522) Won 2-1 +171575
4legacy 99 Alario, Anthony J (1554) Won 2-0 +181593
5legacy 54 Majlaton, Alex (1719) Won 2-0 +201613
6legacy 23 Burks, Brandon (1606) Draw 1-1 01613
7legacy 64 Kadilak, Matt (1590) Lost 0-1 -181595
8legacy 121 Bowab, Parker (1592) Won 2-0 +181613
9legacy 77 Hansard, Brendon (1558) Won 2-0 +171630
10legacy 40 Cape, Phil (1716) Won 2-0 +191649
11legacy 26 Franklin, Richard (1609) Draw 1-1 01649
12legacy 35 Peyton, James (1558) Lost 0-2 -201629
13legacy 45 Bustamante, Analynn (1701) Won 2-0 +191648
14legacy 28 Mannas, Robin (1593) Won 2-1 +171665
15legacy 25 Evans, Stephen (1521) Lost 1-2 -201645
top average opponent: 1589record: 9-3-3 new rating: 1645

Grand Prix Philadelphia 2005 (legacy) starting rating: 1500
round table opponent (rating) result Δrating
1legacy 48 Blanc, Eric (1500) Won 2-0 +181518
2legacy 109 Connelly, Daniel R (1570) Lost 1-2 -171501
3legacy 89 Janovics, Peter (1501) Lost 0-2 -181483
4legacy 171 Grace, Ed (1482) Won 2-0 +181501
5legacy 140 Hanson, George (1503) Won 2-0 +181519
6legacy 137 Santiago, Angelo (1590) Won 2-1 +191538
7legacy 68 Ravitz, Joshua (1709) Lost 0-2 -151523
8legacy 90 Pettinari, Eric (1537) Won 2-1 +191542
top average opponent: 1549record: 5-3 new rating: 1542