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Boyko, Derek K
Current rating: 1567

Grand Prix San Diego 2015 (ORI standard) starting rating: 1548
round table opponent (rating) result Δrating
1standard 53 Colio, Ivan (1563) Lost 1-2 -171531
2standard 387 Villalobos, Mario (1408) Won 2-1 +151546
3standard 485 Davila, David (1447) Won 2-1 +171563
4standard 387 Young, Kelvin (1690) Lost 0-2 -161547
5standard 374 Boyd, Nathan (1550) Won 2-0 +181565
6standard 406 Alferez, Marcelo (1501) Won 2-1 +171582
7standard 152 Downing, Eric (1780) Lost 1-2 -151567
top average opponent: 1563record: 4-3 new rating: 1567

Grand Prix Seattle-Tacoma 2012 (DKA limited) starting rating: 1553
round table opponent (rating) result Δrating
1sealed 326 Watson, James (1500) Won 2-1 +171570
2sealed 148 Amburn, Timothy (1501) Lost 1-2 -191551
3sealed 398 Morrison, Scott (1502) Won 2-0 +171568
4sealed 209 Harris, Spencer (1550) Lost 1-2 -181550
5sealed 351 Howard, Adam L (1501) Won 2-0 +171567
6sealed 301 Woolley, Tyler (1542) Lost 1-2 -191548
top average opponent: 1516record: 3-3 new rating: 1548

Grand Prix Minneapolis 2009 (ZEN limited) starting rating: 1500
round table opponent (rating) result Δrating
1sealed 325 Zuehlke, Aaron (1500) Won 2-0 +181518
2sealed 234 Bailey, Brian C (1500) Won 2-1 +181536
3sealed 115 Cunningham, Jackson (1525) Lost 0-2 -191517
4sealed 172 Bulger, Tim (1629) Won 2-0 +211538
5sealed 156 Shriver, Paul (1536) Won 2-1 +171555
6sealed 67 Bushee, Marc (1461) Won 2-1 +171572
7sealed 54 Heineman, David (1480) Won 2-0 +161588
8sealed 52 Pieper, Charles (1573) Lost 1-2 -181570
9sealed 36 Aintrazi, Ali (1638) Lost 0-2 -171553
top average opponent: 1538record: 6-3 new rating: 1553