Ellsworth, Stefan
Current rating: 1550
Record: 16-18-1
| Grand Prix Providence 2016 (KLD standard) | starting rating: 1507 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 300 | Kadar, Griffin (1618) | Won 2-0 | +201527 |
| 2standard | 253 | Webb, Mark (1590) | Lost 1-2 | -171510 |
| 3standard | 298 | DeLuca, Seth (1752) | Won 2-0 | +221532 |
| 4standard | 174 | Dufour, David (1475) | Won 2-1 | +171549 |
| 5standard | 241 | Bryant, Connor (1536) | Won 2-1 | +181567 |
| 6standard | 115 | Misiaszek, Michael (1648) | Draw 1-1 | +11568 |
| 7standard | 95 | Lavallee, Len (1615) | Lost 1-2 | -171551 |
| 8standard | 189 | Sykulski, Lynn (1525) | Won 2-0 | +181569 |
| 9standard | 118 | Doehring, Willy (1530) | Lost 0-2 | -191550 |
| top | average opponent: 1588record: 5-3-1 | new rating: 1550 | ||
| Grand Prix Boston-Worcester 2012 (M13 limited) | starting rating: 1388 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 233 | Reed, Andrew (1536) | Won 2-0 | +211409 |
| 4sealed | 134 | Westbrook, Matthew (1532) | Won 2-1 | +201429 |
| 5sealed | 74 | PERLMUTTER, DANIEL (1569) | Won 2-0 | +211450 |
| 6sealed | 55 | Owens, James (1519) | Won 2-0 | +191469 |
| 7sealed | 21 | Watanabe, Yuuya (2199) | Won 2-0 | +291498 |
| 8sealed | 3 | Wescoe, Craig (1961) | Won 2-1 | +261524 |
| 9sealed | 5 | Holzinger, Thomas (2077) | Lost 1-2 | -91515 |
| 10sealed | 26 | Nakamura, Shuhei (1863) | Lost 1-2 | -121503 |
| 11draft | 36 | Skarren, Frank (1739) | Lost 0-2 | -131490 |
| 12draft | 93 | Verno, Aharon (1553) | Won 2-1 | +191509 |
| 13draft | 35 | Woods, Conley (1934) | Lost 0-2 | -111498 |
| 14draft | 48 | Hunt, Matthias (1940) | Lost 1-2 | -101488 |
| 16draft | 59 | Peter C., (1553) | Won 2-1 | +191507 |
| top | average opponent: 1767record: 8-5 | new rating: 1507 | ||
| Grand Prix San Diego 2011 (ISD limited) | starting rating: 1400 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 415 | Beg, Zaiem (1552) | Won 2-0 | +211421 |
| 3sealed | 407 | Sendra, Danilo (1500) | Lost 0-2 | -171404 |
| 4sealed | 497 | Kalionzes, Nick (1519) | Lost 1-2 | -161388 |
| top | average opponent: 1524record: 1-2 | new rating: 1388 | ||
| Grand Prix Providence 2011 (legacy) | starting rating: 1432 | |||
| round | table | opponent (rating) | result | Δrating |
| 4legacy | 87 | Coghlan, Brian (1547) | Lost 1-2 | -161416 |
| 5legacy | 88 | Houghton, David (1537) | Lost 1-2 | -161400 |
| top | average opponent: 1542record: 0-2 | new rating: 1400 | ||
| Grand Prix Philadelphia 2008 (extended) | starting rating: 1446 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 216 | Barker, Jeremy (1480) | Lost 1-2 | -181428 |
| 3extended | 338 | Maldonado, Stephen (1436) | Won 2-0 | +181446 |
| 4extended | 143 | Ashman, Benji (1628) | Lost 0-2 | -141432 |
| top | average opponent: 1515record: 1-2 | new rating: 1432 | ||
| Grand Prix Boston 2005 (extended) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1extended | 28 | Egli, Adam J (1481) | Lost 1-2 | -181482 |
| 2extended | 201 | Clark, Adam [USA] (1482) | Won 2-0 | +181500 |
| 3extended | 152 | Utter, Steven (1515) | Lost 0-2 | -181482 |
| 4extended | 280 | Morgan, Sean (1461) | Lost 0-2 | -181464 |
| 5extended | 262 | Grygorczyk, Marius (1464) | Lost 0-2 | -181446 |
| top | average opponent: 1481record: 1-4 | new rating: 1446 | ||