Armbruster, Chris
Current rating: 1596
Record: 29-27-4
| Grand Prix Oakland 2004 (DST limited) | starting rating: 1618 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 69 | Purifoy, Charles (1518) | Won 2-1 | +171635 |
| 3sealed | 49 | Young, Pete (1517) | Lost 0-2 | -211614 |
| 4sealed | 66 | Diamant, Daniel (1573) | Lost 0-2 | -181596 |
| top | average opponent: 1536record: 1-2 | new rating: 1596 | ||
| Grand Prix Anaheim 2003 (extended) | starting rating: 1592 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 57 | Rideout, Vincent (1500) | Won 2-0 | +171609 |
| 3extended | 15 | Anderson, Kaare (1694) | Won 2-0 | +191628 |
| 4extended | 41 | Wee, Olwen (1612) | Lost 0-2 | -181610 |
| 5extended | 54 | Impellizzieri, Anthony (1690) | Lost 1-2 | -171593 |
| 6extended | 62 | Kastle, Darwin (1742) | Won 2-0 | +211614 |
| 7extended | 58 | Hegstad, Brian (1744) | Won 2-0 | +211635 |
| 8extended | 26 | Bongiovanni, Mauro (1733) | Lost 1-2 | -171618 |
| top | average opponent: 1674record: 4-3 | new rating: 1618 | ||
| Grand Prix Los Angeles 2002 (ONS rochester) | starting rating: 1489 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 71 | Bolick, Robbie (1519) | Won 2-0 | +191508 |
| 3sealed | 70 | Jilani, Shaiquel (1467) | Lost 0-2 | -191489 |
| 4sealed | 115 | Simpson, Ken (1568) | Won 2-1 | +191508 |
| 5sealed | 67 | Knowles, Eric (1450) | Won 2-0 | +171525 |
| 6sealed | 62 | Bartholow, David (1565) | Won 2-0 | +191544 |
| 7sealed | 32 | Nolasco, Victor (1572) | Won 2-0 | +181562 |
| 8sealed | 6 | Pustilnik, Michael (1859) | Won 2-0 | +241586 |
| 9rochester | 28 | Swarowski, Peter (1595) | Lost 1-2 | -181568 |
| 10rochester | 28 | Szigeti, Peter (1675) | Lost 1-2 | -161552 |
| 11rochester | 16 | Muranaka, Aaron (1477) | Won 2-0 | +171569 |
| 12rochester | 1 | Chatfield, Lawrence (1718) | Won 2-0 | +201589 |
| 13rochester | 20 | Carleton-Barnes, Gabriel (1657) | Lost 0-2 | -171572 |
| 14rochester | 10 | Shears, Steven (1683) | Won 2-0 | +201592 |
| top | average opponent: 1600record: 9-4 | new rating: 1592 | ||
| Grand Prix Las Vegas 2001 (extended) | starting rating: 1521 | |||
| round | table | opponent (rating) | result | Δrating |
| 3extended | 30 | Prokopin, Adam (1814) | Draw 0-0 | +51526 |
| 4extended | 70 | Johnson, Matthew (1437) | Lost 1-2 | -201506 |
| 5extended | 116 | Schrader, Jeff (1518) | Won 2-0 | +191525 |
| 6extended | 73 | Sherman, Kevin (1555) | Lost 0-2 | -181507 |
| 7extended | 92 | Berry, Lynn (1502) | Lost 0-2 | -181489 |
| top | average opponent: 1565record: 1-3-1 | new rating: 1489 | ||
| Grand Prix Denver 2001 (Invasion block) | starting rating: 1468 | |||
| round | table | opponent (rating) | result | Δrating |
| 3block | 4 | Schmidt, Karl (1689) | Lost 1-2 | -141454 |
| 4block | 91 | Pak, James (1430) | Won 2-1 | +181472 |
| 5block | 53 | Tynan, Patrick (1517) | Won 2-1 | +191491 |
| 6block | 27 | Ellis, Ryan (1484) | Won 2-1 | +171508 |
| 7block | 23 | Hostetler, Jesse (1523) | ID | 01508 |
| 8block | 21 | Knobloch, Aaron (1569) | Lost 1-2 | -161492 |
| 9block | 26 | Stark, Ben S (1658) | Won 2-0 | +211513 |
| 10block | 19 | Blackwell, Trevor (1849) | Lost 1-2 | -131500 |
| 11block | 27 | Stanton, Jack (1513) | Lost 1-2 | -171483 |
| 12block | 28 | Barnes, Joel 2 (1561) | Won 2-0 | +191502 |
| 13block | 24 | Cassidy, Jonathan (1542) | Won 2-1 | +191521 |
| top | average opponent: 1576record: 6-4-1 | new rating: 1521 | ||
| Grand Prix Phoenix 2000 (extended) | starting rating: 1472 | |||
| round | table | opponent (rating) | result | Δrating |
| 4extended | 6 | Welty, Terry (1539) | Lost 0-1 | -171455 |
| 5extended | 42 | Ly, Darek (1483) | Won 2-0 | +181473 |
| 6extended | 23 | Wilke, Jesse (1519) | Won 2-0 | +191492 |
| 7extended | 17 | DeMaci, Chris (1518) | Draw 1-1 | +11493 |
| 8extended | 23 | Prokopin, Adam (1611) | Won 2-0 | +201513 |
| 9extended | 7 | Ho, Ken (1577) | Lost 0-1 | -171496 |
| 10extended | 16 | Currence, Bryce (1596) | Won 2-1 | +201516 |
| 11extended | 10 | Mortensen, Matthew (1581) | Lost 0-2 | -171499 |
| 12extended | 16 | Brower, Jeremy (1706) | Lost 0-2 | -141485 |
| 13extended | 20 | Bunsongsikul, Ped (1574) | Lost 0-2 | -171468 |
| top | average opponent: 1570record: 4-5-1 | new rating: 1468 | ||
| Grand Prix Seattle 2000 (extended) | starting rating: 1487 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 55 | Thompson, Mike (1487) | Lost 0-0 | -181469 |
| 3extended | 52 | Aszman, Greg (1500) | Lost 0-0 | -181451 |
| 4extended | 101 | Insco, Chris (1482) | Won 0-0 | +191470 |
| 5extended | 106 | Christiansen, Troy (1502) | Won 0-0 | +181488 |
| 6extended | 82 | Moore, Devon (1520) | Lost 0-0 | -171471 |
| 7extended | 72 | Buehler, Kurt (1501) | Draw 0-0 | +11472 |
| top | average opponent: 1499record: 2-3-1 | new rating: 1472 | ||
| Grand Prix San Diego 1999 (MMQ limited) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 48 | Kirton, Jon (1518) | Won 0-0 | +181518 |
| 3sealed | 4 | Murray, Jason (1518) | Draw 1-1 | 01518 |
| 4sealed | 39 | Rapisarda, Jonathan (1536) | Lost 0-0 | -171501 |
| 5sealed | 65 | Anderson, Kaare (1518) | Won 0-0 | +181519 |
| 6sealed | 37 | Comer, Alan (1712) | Lost 0-2 | -151504 |
| 7sealed | 60 | Fendelander, James (1517) | Lost 0-0 | -171487 |
| top | average opponent: 1553record: 2-3-1 | new rating: 1487 | ||