Lamb, Jonathan
Current rating: 1580
Record: 23-19-1
| Grand Prix Providence 2015 (DTK standard) | starting rating: 1531 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 157 | Ciaffone, Sal (1500) | Lost 1-2 | -191512 |
| 2standard | 307 | Sturgen, Corey (1442) | Lost 0-2 | -191493 |
| 3standard | 483 | Vasquez, William (1464) | Won 2-0 | +171510 |
| 4standard | 440 | Lopez, Jose Manuel (1447) | Won 2-1 | +171527 |
| 5standard | 339 | Emery, Darrin (1460) | Won 2-0 | +171544 |
| 6standard | 297 | Tuttle, Marc (1640) | Won 2-1 | +201564 |
| 7standard | 216 | Chagnon, Cody (1483) | Won 2-1 | +161580 |
| 8standard | 76 | Barber, Ian (1545) | Won 2-1 | +181598 |
| 9standard | 39 | Gareau, Philippe (1625) | Lost 0-0 | -181580 |
| top | average opponent: 1512record: 6-3 | new rating: 1580 | ||
| Grand Prix Philadelphia 2014 (BNG limited) | starting rating: 1566 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 242 | Lee, Jesse (1539) | Lost 1-2 | -181548 |
| 4sealed | 211 | Farrell, Michael K (1700) | Lost 1-2 | -151533 |
| 5sealed | 618 | Tolvanen, Juha (1513) | Won 2-1 | +171550 |
| 6sealed | 281 | Watts, Russell (1472) | Lost 1-2 | -191531 |
| top | average opponent: 1556record: 1-3 | new rating: 1531 | ||
| Grand Prix Richmond 2014 (modern) | starting rating: 1519 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 344 | Muller, Chris (1528) | Won 2-0 | +181537 |
| 3modern | 263 | Nevins, Philip (1500) | Won 2-0 | +171554 |
| 4modern | 9 | League, Charles (1584) | Won 2-1 | +191573 |
| 5modern | 67 | Wescoe, Craig (1939) | Lost 1-2 | -121561 |
| 6modern | 81 | Raymond, Richard (1552) | Won 2-0 | +181579 |
| 7modern | 44 | Davis, John (1691) | Won 2-1 | +201599 |
| 8modern | 48 | McDuffie, Korey (1768) | Lost 0-2 | -151584 |
| 9modern | 99 | Liberati, Bernard (1554) | Won 2-1 | +181602 |
| 10modern | 189 | Ahmeti, Enver (1585) | Lost 0-2 | -191583 |
| 11modern | 164 | Giordano, Nick (1572) | Won 2-0 | +181601 |
| 12modern | 128 | Manning, Andre (1645) | Lost 0-2 | -171584 |
| 13modern | 162 | Kisilewicz, Audrey (1601) | Lost 1-2 | -181566 |
| top | average opponent: 1627record: 7-5 | new rating: 1566 | ||
| Grand Prix Washington DC 2013 (legacy) | starting rating: 1541 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 291 | Martin, Luke (1482) | Won 2-0 | +171558 |
| 2legacy | 363 | Calderon, Andrew (1732) | Lost 0-2 | -151543 |
| 3legacy | 648 | Sauve, Ryan (1524) | Lost 1-2 | -181525 |
| 4legacy | 618 | Reyes, Hanlis (1392) | Won 2-0 | +151540 |
| 5legacy | 638 | Feola, Nick (1450) | Won 2-1 | +171557 |
| 6legacy | 356 | Doolittle, Shelby (1665) | Lost 0-2 | -161541 |
| 7legacy | 252 | Finnegan, Michael (1466) | Lost 1-2 | -201521 |
| 8legacy | 420 | Jones, Dylan (1429) | Lost 0-2 | -191502 |
| 9legacy | 352 | Sadow-Reinshagen, Jacob (1464) | Won 2-0 | +171519 |
| top | average opponent: 1511record: 4-5 | new rating: 1519 | ||
| Grand Prix Atlantic City 2013 (RTR standard) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 474 | Ong, Alvin (1500) | Won 2-0 | +181518 |
| 2standard | 99 | Johnson, George T (1574) | Lost 0-2 | -171501 |
| 3standard | 327 | Trottier, Charles (1591) | Lost 0-2 | -161485 |
| 4standard | 630 | Zhuang, Peter (1481) | Won 2-1 | +181503 |
| 5standard | 467 | Higgins, Oliver (1498) | Won 2-0 | +171520 |
| 6standard | 354 | Dell, Willis (1474) | Won 2-1 | +181538 |
| 7standard | 349 | Edelkamp, Fred (1764) | Won 2-1 | +221560 |
| 8standard | 120 | Langella, Nick (1537) | Draw 1-1 | -11559 |
| 9standard | 165 | Morges, Ryan (1550) | Lost 1-2 | -181541 |
| top | average opponent: 1552record: 5-3-1 | new rating: 1541 | ||