Kotwica, Ron
Current rating: 1763 (#3334)
Record: 72-47 (GP) / 23-18 (professional)
- 1998
- 2000
- 2001
- 2002
- 2012
- 2013
- 2014
- 2015
- 2017
- 2018
- 2019
| Grand Prix Las Vegas 2019 (limited) (MH1 limited) | starting rating: 1773 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 28 | Son, Justin (1580) | Won 2-0 | +151788 |
| 3sealed | 221 | Olvera, Bryan (1617) | Lost 0-2 | -221766 |
| 4sealed | 172 | Wang, Haotian (1923) | Won 2-1 | +211787 |
| 5sealed | 227 | Harding, Tommy (1895) | Won 2-0 | +201807 |
| 6sealed | 112 | Joo, Gene (1556) | Won 2-0 | +141821 |
| 7sealed | 94 | Judd, Andre (1680) | Lost 0-2 | -211800 |
| 8sealed | 158 | Perret, Valentin (1479) | Won 2-0 | +131813 |
| 9sealed | 44 | Goslar, Matthew (1761) | Lost 1-2 | -191794 |
| 10draft | 2082 | Troha, Dan (1808) | Lost 1-2 | -181776 |
| 11draft | 2126 | Ballard, Kevin (1461) | Won 2-0 | +121788 |
| 12draft | 2094 | Brower, Wesley (1605) | Won 2-1 | +151803 |
| 13draft | 2049 | James, Kyle (1658) | Lost 1-2 | -211782 |
| 14draft | 2045 | Chen, Lokman (1706) | Lost 0-2 | -191763 |
| top | average opponent: 1671record: 7-6 | new rating: 1763 | ||
| Grand Prix Las Vegas 2019 (modern) (modern) | starting rating: 1820 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 257 | Beaver, Quest (1507) | Lost 1-2 | -241796 |
| 3modern | 421 | Bauer, Ren (1499) | Won 2-0 | +131809 |
| 4modern | 439 | Krause, Travis (1368) | Won 2-0 | +101819 |
| 5modern | 256 | Kirschenmann, Samuel (1512) | Lost 0-2 | -231796 |
| 6modern | 311 | Buddensiek, Peter (1529) | Lost 1-2 | -231773 |
| top | average opponent: 1483record: 2-3 | new rating: 1773 | ||
| Grand Prix Cleveland 2019 (RNA limited) | starting rating: 1876 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 19 | Montgomery, Matthew (1502) | Lost 0-2 | -251851 |
| 3sealed | 403 | Lyons, Matt (1501) | Lost 1-2 | -241827 |
| 4sealed | 431 | Mohr, Mike (1354) | Won 2-1 | +101837 |
| 5sealed | 373 | Dreger, Seth (1503) | Won 2-0 | +121849 |
| 6sealed | 221 | Rodriguez, Miles (1694) | Lost 1-2 | -211828 |
| 7sealed | 285 | Holtzman, William (1646) | Won 2-0 | +151843 |
| 8sealed | 232 | Robertson, Demetria (1539) | Lost 1-2 | -231820 |
| top | average opponent: 1534record: 3-4 | new rating: 1820 | ||
| Grand Prix Pittsburgh 2018 (DOM standard) | starting rating: 1880 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 186 | Colwell, Anthony (1602) | Lost 1-2 | -231857 |
| 2standard | 224 | Cast, Tony (1438) | Won 2-0 | +111868 |
| 3standard | 295 | Butler, Dimitri (1501) | Lost 1-2 | -251843 |
| 4standard | 332 | Rowley, Sasha (1412) | Won 2-0 | +111854 |
| 5standard | 346 | Siembor, Michael (1630) | Won 2-1 | +141868 |
| 6standard | 218 | Purcell, Luke (1821) | Lost 0-2 | -191849 |
| 7standard | 264 | Vizaro, Justin (1660) | Won 2-0 | +151864 |
| 8standard | 209 | Knox, Owen (1516) | Won 2-1 | +121876 |
| top | average opponent: 1572record: 5-3 | new rating: 1876 | ||
| Grand Prix Las Vegas 2018 (modern) (modern) | starting rating: 1843 | |||
| round | table | opponent (rating) | result | Δrating |
| 1modern | 497 | Artigue, Chris (1500) | Won 2-1 | +121855 |
| 2modern | 24 | Yuen, William (1575) | Won 2-0 | +131868 |
| 3modern | 157 | Nieves, Gabriel (1748) | Lost 1-2 | -201848 |
| 4modern | 440 | Rodriguez, Robert (1504) | Won 2-1 | +121860 |
| 5modern | 418 | Matheson, Brandon (1573) | Won 2-1 | +131873 |
| 6modern | 245 | Freeman, Marcelino (1809) | Won 2-0 | +171890 |
| 7modern | 146 | Diaz, Daniel (1698) | Lost 0-2 | -221868 |
| 8modern | 221 | Mowrey, Austin (1800) | Won 2-1 | +171885 |
| 9modern | 5180 | Beg, Zaiem (1626) | Won 2-0 | +131898 |
| 10modern | 5134 | Manfield, Seth (2098) | Lost 1-2 | -141884 |
| 11modern | 5172 | Yeates, Sean (1597) | Lost 1-2 | -231861 |
| 12modern | 5152 | Burg, Steven (1638) | Won 2-1 | +141875 |
| 13modern | 5108 | Boykowich, Dylan (1678) | Lost 1-2 | -221853 |
| 14modern | 5124 | Parco, Justin (1516) | Won 2-0 | +121865 |
| 15modern | 5128 | Leduc Gauthier, Samuel (1673) | Won 2-1 | +151880 |
| top | average opponent: 1669record: 10-5 | new rating: 1880 | ||
| Grand Prix Pittsburgh 2017 (AER standard) | starting rating: 1705 | |||
| round | table | opponent (rating) | result | Δrating |
| 1standard | 66 | Alabiso, Aaron (1480) | Won 2-1 | +141719 |
| 2standard | 96 | Lee, Eric (1560) | Won 2-0 | +151734 |
| 3standard | 118 | Roche, Michael [USA] (1567) | Won 2-1 | +151749 |
| 4standard | 144 | O'Donnell, Devon (1811) | Won 2-1 | +201769 |
| 5standard | 9 | Turnbull, Chris (1503) | Won 2-1 | +131782 |
| 6standard | 22 | Stratton, Alexander (1779) | Won 2-1 | +181800 |
| 7standard | 18 | Bohnhoff, Benjamin (1734) | Lost 1-2 | -191781 |
| 8standard | 24 | Vuong, Richie (1687) | Won 2-0 | +161797 |
| 9standard | 28 | Chichy, Christopher (1707) | Won 2-1 | +161813 |
| 10standard | 561 | Comminos, Bill (1826) | Won 2-1 | +181831 |
| 11standard | 547 | Goldfarb, David (1915) | Won 2-1 | +201851 |
| 12standard | 542 | Hare, Ryan (1706) | Lost 1-2 | -211830 |
| 13standard | 546 | Sockol, Edward (1734) | Won 2-1 | +171847 |
| 14standard | 547 | Nance, Hunter (1813) | Lost 1-2 | -191828 |
| 15standard | 556 | Houle, Simon (1671) | Won 2-1 | +151843 |
| top | average opponent: 1699record: 12-3 | new rating: 1843 | ||
| Grand Prix Pittsburgh 2015 (modern) | starting rating: 1775 | |||
| round | table | opponent (rating) | result | Δrating |
| 2modern | 467 | Webster, Aaron (1603) | Lost 0-2 | -211754 |
| 3modern | 678 | Harris, Owen (1500) | Won 2-0 | +131767 |
| 4modern | 678 | East, Samuel (1675) | Lost 0-2 | -191748 |
| 5modern | 794 | Johnson, Brendon (1557) | Lost 1-2 | -221726 |
| 6modern | 919 | Wicker, Benjamin (1483) | Won 2-0 | +141740 |
| 7modern | 682 | Esquivel, Jorge (1503) | Lost 0-2 | -221718 |
| 8modern | 543 | Williamson, Scott (1243) | Won 2-0 | +101728 |
| 9modern | 402 | Solave, Ryan (1492) | Lost 1-2 | -231705 |
| top | average opponent: 1507record: 3-5 | new rating: 1705 | ||
| Grand Prix Las Vegas 2015 (1) (MM2 limited) | starting rating: 1724 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 453 | Watabashi, Keith (1500) | Won 2-0 | +141738 |
| 2sealed | 206 | Gentile, Greg (1415) | Lost 1-2 | -231715 |
| 3sealed | 429 | Rees, Michael (1434) | Won 2-1 | +131728 |
| 4sealed | 278 | Palmer, Sean (1519) | Lost 0-2 | -221706 |
| 5sealed | 348 | Klahn, Sam (1518) | Won 2-1 | +141720 |
| 6sealed | 171 | Pringle, Shaun (1473) | Won 2-1 | +141734 |
| 7sealed | 161 | Kajala, Kaisa (1726) | Won 2-1 | +181752 |
| 8sealed | 92 | Alter, Scott (1521) | Won 2-1 | +141766 |
| 9sealed | 91 | Boudwin, Andrew (1780) | Won 2-0 | +181784 |
| 10draft | 80 | Fields, Frank (1563) | Won 2-0 | +141798 |
| 11draft | 109 | Hanson, Daniel (1780) | Lost 0-2 | -181780 |
| 12draft | 106 | Black, Samuel (2097) | Lost 1-2 | -131767 |
| 13draft | 123 | O'Dell, Roy (1529) | Won 2-1 | +141781 |
| 14draft | 114 | Banks, Matthew (1554) | Lost 0-2 | -221759 |
| 15draft | 121 | Blackmor, Jason (1650) | Won 2-0 | +161775 |
| top | average opponent: 1604record: 10-5 | new rating: 1775 | ||
| Grand Prix New Jersey 2014 (legacy) | starting rating: 1755 | |||
| round | table | opponent (rating) | result | Δrating |
| 1legacy | 736 | Schreiber, Marc (1609) | Won 2-1 | +151770 |
| 2legacy | 1028 | French, Rick (1515) | Won 2-0 | +141784 |
| 3legacy | 874 | Ansell, Christy (1588) | Won 2-0 | +141798 |
| 4legacy | 829 | Hayworth, Paul S (1550) | Lost 1-2 | -221776 |
| 5legacy | 725 | Smith, Jordan (1542) | Won 2-1 | +131789 |
| 6legacy | 700 | Ko, Jason (1564) | Lost 1-2 | -221767 |
| 7legacy | 792 | Regan, Christian (1536) | Lost 1-2 | -221745 |
| 8legacy | 754 | Ancelmo, Fabio (1582) | Lost 1-2 | -211724 |
| top | average opponent: 1561record: 4-4 | new rating: 1724 | ||
| Grand Prix Pittsburgh 2013 (GTC limited) | starting rating: 1759 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 257 | Paster, Kyle (1553) | Won 2-0 | +151774 |
| 2sealed | 20 | Visco, David (1610) | Won 2-0 | +151789 |
| 3sealed | 597 | Glackin, Ryan (1621) | Won 2-0 | +151804 |
| 4sealed | 78 | Thurman, Matt (1537) | Lost 1-2 | -231781 |
| 5sealed | 177 | Sulla, Aaron (1670) | Lost 0-2 | -201761 |
| 6sealed | 299 | Jones, Trent (1743) | Won 2-1 | +181779 |
| 7sealed | 201 | Hartman, Dan (1447) | Lost 1-2 | -241755 |
| top | average opponent: 1597record: 4-3 | new rating: 1755 | ||
| Grand Prix Philadelphia 2012 (RTR limited) | starting rating: 1635 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 830 | Painter, Jameson (1520) | Lost 0-0 | -201615 |
| 2sealed | 802 | Le, Richard (1484) | Won 2-0 | +151630 |
| 3sealed | 671 | Skarvelis, Theo (1500) | Won 2-0 | +161646 |
| 4sealed | 689 | Iu, Kevin (1523) | Won 2-1 | +161662 |
| 5sealed | 627 | Black, Seth (1368) | Won 2-1 | +121674 |
| 6sealed | 609 | Phillips, Eric (1780) | Lost 0-2 | -161658 |
| 7sealed | 647 | Johnson, Vincent (1619) | Won 2-0 | +181676 |
| 8sealed | 615 | Derczo, Michael (1554) | Won 2-1 | +151691 |
| 9sealed | 561 | Baran, Frank (1521) | Won 2-0 | +151706 |
| 10sealed | 119 | Lazaro, Andrew (1542) | Won 2-1 | +151721 |
| 11draft | 75 | Harris, Spencer (1679) | Won 2-0 | +171738 |
| 12draft | 59 | Berg, Tim (1795) | Lost 0-2 | -161722 |
| 13draft | 67 | Beverley, Robert (1708) | Won 2-1 | +171739 |
| 14draft | 5 | Dedych, Luke P (1638) | Won 2-0 | +161755 |
| 15draft | 78 | Krumb, Michael (1922) | Won 2-1 | +211776 |
| 16draft | 60 | Berg, Tim (1827) | Lost 1-2 | -171759 |
| top | average opponent: 1624record: 12-4 | new rating: 1759 | ||
| Pro Tour San Diego 2002 (ODY rochester) | starting rating: 1639 | |||
| round | table | opponent (rating) | result | Δrating |
| 1rochester | 60 | Mindes, Michael (1565) | Lost 1-2 | -201619 |
| 2rochester | 3 | Rood, David (1664) | Lost 0-2 | -171602 |
| 3rochester | 89 | Stone, Matt (1464) | Won 2-1 | +161618 |
| 5rochester | 103 | Gutierrez, Miguel Anth (1482) | Won 2-1 | +151633 |
| 6rochester | 3 | Bornarel, Nicolas (1633) | Won 2-1 | +181651 |
| 7rochester | 36 | McCord, Scott (1727) | Lost 0-2 | -161635 |
| top | average opponent: 1589record: 3-3 | new rating: 1635 | ||
| Pro Tour Barcelona 2001 (PLS draft) | starting rating: 1569 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 92 | Hovi, Tommi (1940) | Lost 0-2 | -111558 |
| 2draft | 85 | Osterberg, Rickard (1803) | Lost 1-2 | -141544 |
| 3draft | 13 | Kenny, John (1496) | Won 2-1 | +171561 |
| 4draft | 107 | Karaszewski, Pawel (1483) | Won 2-1 | +171578 |
| 5draft | 125 | Jensen, Niels Sanders (1776) | Won 2-0 | +211599 |
| 6draft | 12 | Boeken, Noah (1942) | Won 2-0 | +241623 |
| 7draft | 29 | Mandel, Danny (1861) | Lost 1-2 | -131610 |
| 8draft | 31 | Miller, Roger (1586) | Lost 0-2 | -191591 |
| 9draft | 71 | Quirk, Kevin (1624) | Won 2-0 | +191610 |
| 10draft | 47 | Schreurs, Jos (1794) | Won 2-1 | +211631 |
| 11draft | 19 | van de Logt, Tom (1739) | Lost 1-2 | -161615 |
| 12draft | 63 | Wong, Nicholas Jonathan (1746) | Lost 1-2 | -151600 |
| 13draft | 3 | Wise, Gary (1753) | Won 2-1 | +201620 |
| 14draft | 47 | Breider, Aaron (1641) | Won 2-0 | +191639 |
| top | average opponent: 1728record: 8-6 | new rating: 1639 | ||
| Pro Tour Los Angeles 2001 (INV rochester) | starting rating: 1450 | |||
| round | table | opponent (rating) | result | Δrating |
| 1rochester | 120 | Lindeman, Lennart (1577) | Won 2-1 | +201470 |
| 2rochester | 92 | LePine, Mark (1734) | Lost 0-2 | -131457 |
| 3rochester | 72 | Cleemann, Jonas (1515) | Lost 1-2 | -171440 |
| 4rochester | 7 | Okamoto, Hiroki (1531) | Won 2-1 | +191459 |
| 5rochester | 145 | Kastle, Darwin (1774) | Won 2-1 | +241483 |
| 6rochester | 75 | Brown-Santirso, Damian (1523) | Won 2-0 | +191502 |
| 7rochester | 50 | Haljoki, Osmo (1595) | Won 2-0 | +191521 |
| 8rochester | 37 | Parke, Jamie (1876) | Won 2-0 | +251546 |
| 9rochester | 12 | Williams, David A (1809) | Won 2-1 | +221568 |
| 10rochester | 14 | Rose, Kyle (1874) | Lost 0-2 | -121556 |
| 11rochester | 35 | Nitter, Eivind (1814) | Lost 0-2 | -141542 |
| 12rochester | 75 | Weil, Noah (1746) | Won 2-0 | +221564 |
| 13rochester | 22 | Williams, David A (1800) | Lost 0-2 | -141550 |
| 14rochester | 37 | Wiegersma, Jelger (1613) | Won 2-0 | +191569 |
| top | average opponent: 1699record: 9-5 | new rating: 1569 | ||
| Grand Prix Philadelphia 2000 (extended) | starting rating: 1482 | |||
| round | table | opponent (rating) | result | Δrating |
| 2extended | 105 | Weitz, David (1631) | Lost 0-0 | -161466 |
| 3extended | 120 | Boyd, David 2 (1533) | Lost 0-0 | -161450 |
| top | average opponent: 1582record: 0-2 | new rating: 1450 | ||
| Pro Tour Los Angeles 1998 (Tempest block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 51 | Baran, Marcel (1500) | Lost 0-0 | -181482 |
| 2block | 161 | Ralsten, Rick (1482) | Lost 0-0 | -181464 |
| 3block | 146 | Zagmester, Denis-Ozren (1464) | Won 0-0 | +181482 |
| 4block | 117 | Leiher, Peter (1482) | Lost 0-0 | -181464 |
| 5block | 129 | Slapak, Mark (1446) | Won 0-0 | +181482 |
| 6block | 98 | De Foucaud, Cyrille (1482) | Lost 0-0 | -181464 |
| 7block | 118 | De Almeida, Carlos (1464) | Won 0-0 | +181482 |
| top | average opponent: 1474record: 3-4 | new rating: 1482 | ||