Sienko, Piotr
Current rating: 1736 (#4505)
Record: 59-39-2 (GP) / 8-6 (professional)
| Grand Prix Krakow 2019 (M20 limited) | starting rating: 1752 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 430 | Salomonsen, Stig (1500) | Lost 1-2 | -221730 |
| 3sealed | 424 | Dvorak, Jiri 2119 (1559) | Lost 0-2 | -211709 |
| 4sealed | 329 | Maximcev, Maxim (1487) | Won 2-1 | +141723 |
| 5sealed | 330 | Cammilluzzi, Marco (1815) | Won 2-0 | +201743 |
| 6sealed | 153 | Aaro, Carl Oscar (1674) | Won 2-1 | +161759 |
| 7sealed | 236 | Bochnak, Piotr (1474) | Lost 1-2 | -231736 |
| top | average opponent: 1585record: 3-3 | new rating: 1736 | ||
| Grand Prix Warsaw 2018 (GRN limited) | starting rating: 1732 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 467 | Musat, Lucian (1561) | Won 2-0 | +151747 |
| 2sealed | 196 | Pinkster, Wilco (1755) | Lost 0-2 | -171730 |
| 3sealed | 451 | Lechner, Christian (1772) | Lost 1-2 | -181712 |
| 4sealed | 728 | Olsen, Nichlas (1482) | Won 2-1 | +141726 |
| 5sealed | 618 | Munoz, Raul (1403) | Won 2-0 | +121738 |
| 6sealed | 477 | Calzolari, Lorenzo (1559) | Won 2-1 | +151753 |
| 7sealed | 201 | Plisov, Oleg (1881) | Lost 0-2 | -151738 |
| 8sealed | 295 | Badea, Marius (1564) | Won 2-0 | +141752 |
| top | average opponent: 1622record: 5-3 | new rating: 1752 | ||
| Grand Prix Krakow 2007 (LRW standard) | starting rating: 1767 | |||
| round | table | opponent (rating) | result | Δrating |
| 2standard | 514 | Merlet, Cedric (1365) | Lost 0-2 | -251742 |
| 3standard | 625 | Kratka, Jan (1500) | Won 2-1 | +131755 |
| 4standard | 578 | Pasi, Maria Cristina (1484) | Lost 1-2 | -231732 |
| top | average opponent: 1450record: 1-2 | new rating: 1732 | ||
| Pro Tour Kobe 2006 (TSP draft) | starting rating: 1715 | |||
| round | table | opponent (rating) | result | Δrating |
| 1draft | 31 | Tomelitsch, Patrick (1747) | Lost 0-2 | -171698 |
| 2draft | 26 | Jenkins, Dan (1586) | Won 2-1 | +161714 |
| 3draft | 134 | Wafo-Tapa, Guillaume (2018) | Won 2-1 | +231737 |
| 4draft | 22 | Jurkovic, Robert (1739) | Lost 0-2 | -181719 |
| 5draft | 126 | Caumes, Benjamin (1705) | Won 2-0 | +181737 |
| 6draft | 48 | Sittner, Alex (1672) | Won 2-0 | +171754 |
| 8draft | 49 | van Riet, Luis (1724) | Won 2-0 | +171771 |
| 9draft | 42 | Saavedra, Felipe (1882) | Won 2-1 | +201791 |
| 10draft | 43 | Blumer, Yann (1697) | Lost 1-2 | -191772 |
| 11draft | 56 | Kaji, Tomohiro (1971) | Won 2-1 | +211793 |
| 12draft | 1 | Snepvangers, Bram (1951) | Lost 0-2 | -151778 |
| 13draft | 41 | Stein, Sam (1826) | Won 2-1 | +191797 |
| 14draft | 47 | Joens, Klaus (1888) | Lost 1-2 | -161781 |
| 15draft | 33 | Cornelissen, Kamiel (2004) | Lost 0-2 | -141767 |
| top | average opponent: 1815record: 8-6 | new rating: 1767 | ||
| Grand Prix Athens 2006 (TSP limited) | starting rating: 1742 | |||
| round | table | opponent (rating) | result | Δrating |
| 3sealed | 67 | Kavvadas, Vagelis (1536) | Won 2-0 | +141756 |
| 4sealed | 18 | Petreski, Samoil (1513) | Draw 1-1 | -41752 |
| 5sealed | 34 | Nommensen, Knud (1521) | Lost 1-2 | -221730 |
| 6sealed | 75 | Sadeghpour, Johan (1939) | Lost 0-2 | -151715 |
| top | average opponent: 1627record: 1-2-1 | new rating: 1715 | ||
| Grand Prix Hasselt 2006 (RAV limited) | starting rating: 1759 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 83 | Uittenbogaard, Kenny (1507) | Won 2-1 | +141773 |
| 3sealed | 24 | Jorgensen, Martin (1609) | Lost 0-2 | -211752 |
| 4sealed | 141 | Leonard, Micheal (1639) | Lost 0-2 | -201732 |
| 5sealed | 142 | Dietz, Stephan (1502) | Won 2-1 | +141746 |
| 6sealed | 90 | van Leeuwen, Arjan (1662) | Won 2-0 | +161762 |
| 7sealed | 57 | Rutar, Andrej (1639) | Lost 1-2 | -201742 |
| top | average opponent: 1593record: 3-3 | new rating: 1742 | ||
| Grand Prix Eindhoven 2005 (extended) | starting rating: 1801 | |||
| round | table | opponent (rating) | result | Δrating |
| 3extended | 27 | Brucker, David (1859) | Lost 0-2 | -171784 |
| 4extended | 221 | Steinke, Franziska (1518) | Won 2-1 | +131797 |
| 5extended | 153 | Wiedenbein, Holger (1586) | Lost 0-2 | -221775 |
| 6extended | 166 | Kaltsas, Kostas (1560) | Won 2-0 | +141789 |
| 7extended | 149 | Schetter, Jerome (1558) | Won 2-0 | +141803 |
| 8extended | 63 | Montanari, Stefano (1586) | Lost 0-2 | -221781 |
| 9extended | 124 | Rizzo, Francesco (1551) | Lost 0-2 | -221759 |
| top | average opponent: 1603record: 3-4 | new rating: 1759 | ||
| Grand Prix Vienna 2004 (COK limited) | starting rating: 1765 | |||
| round | table | opponent (rating) | result | Δrating |
| 2sealed | 81 | Findejs, Jan (1507) | Won 2-1 | +131778 |
| 3sealed | 50 | Blech, Reinhard (1823) | Lost 0-2 | -171761 |
| 4sealed | 209 | Kotlo, Nermin (1519) | Won 2-1 | +141775 |
| 5sealed | 162 | Schneider, Valentin (1551) | Won 2-0 | +141789 |
| 6sealed | 39 | Cernohous, Petr (1562) | Won 2-1 | +141803 |
| 7sealed | 43 | Acquafermata, Renato (1593) | Won 2-1 | +141817 |
| 8sealed | 24 | Hoelzl, Johannes (1668) | Won 2-1 | +151832 |
| 9sealed | 14 | Lauter, Michael (1669) | Lost 1-2 | -211811 |
| 10rochester | 20 | Stanicic, Ognjen (1625) | Won 2-1 | +151826 |
| 11rochester | 49 | Rizner, Andrej (1665) | Won 2-1 | +151841 |
| 12rochester | 29 | Peschta, Christian (1619) | Lost 1-2 | -221819 |
| 13rochester | 56 | Unfried, Jorg (1783) | Won 2-0 | +171836 |
| 14rochester | 6 | Sierocinski, Adam (1766) | Lost 0-2 | -191817 |
| 15rochester | 9 | Cirigliano, Matteo (1905) | Lost 0-2 | -161801 |
| top | average opponent: 1661record: 9-5 | new rating: 1801 | ||
| Grand Prix Rimini 2004 (Mirrodin block) | starting rating: 1686 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 81 | Douda, Ondrej (1604) | Won 2-0 | +161702 |
| 3block | 96 | Papp, Gabor (1685) | Won 2-0 | +181720 |
| 4block | 62 | Natale, Tommaso (1657) | Won 2-0 | +171737 |
| 5block | 33 | Palumbo, Rocco (1486) | Won 2-1 | +131750 |
| 6block | 5 | Proell, Markus (1543) | Won 2-0 | +141764 |
| 7block | 11 | Gasparac, Luka (1573) | Lost 0-2 | -211743 |
| 8block | 11 | Jacko, Robert (1595) | Won 2-0 | +151758 |
| 9block | 10 | Krutil, Daniel (1759) | Lost 0-2 | -181740 |
| 10block | 19 | Bracht, Maximilian (1574) | Lost 0-2 | -211719 |
| 11block | 28 | Carboni, Simone (1624) | Won 2-0 | +171736 |
| 12block | 23 | Nahodil, Petr (1659) | Lost 0-2 | -201716 |
| 13block | 24 | Vegna, Alessandro (1669) | Won 2-0 | +171733 |
| 14block | 21 | Kreher, Christian (1578) | Won 2-1 | +151748 |
| 15block | 16 | Vergendo, Maurizio (1661) | Won 2-0 | +171765 |
| top | average opponent: 1619record: 10-4 | new rating: 1765 | ||
| Grand Prix Munich 2003 (MRD limited) | starting rating: 1707 | |||
| round | table | opponent (rating) | result | Δrating |
| 4sealed | 88 | Delere, Andre (1732) | Lost 0-2 | -171690 |
| 5sealed | 76 | Rosada, Adrian (1536) | Lost 1-2 | -211669 |
| 6sealed | 230 | Grimm, Martin (1591) | Won 2-1 | +171686 |
| top | average opponent: 1620record: 1-2 | new rating: 1686 | ||
| Grand Prix Prague 2003 (LGN limited) | starting rating: 1686 | |||
| round | table | opponent (rating) | result | Δrating |
| 1sealed | 297 | Foltyn, Viktor (1500) | Won 2-0 | +141700 |
| 2sealed | 114 | Kritochuil, Ivo (1447) | Won 2-0 | +141714 |
| 3sealed | 113 | Seemann, Pavel (1536) | Won 2-1 | +141728 |
| 4sealed | 63 | Sita, Jaroslav (1813) | Won 2-1 | +201748 |
| 5sealed | 42 | Larkin, John (1934) | Lost 1-2 | -151733 |
| 6sealed | 80 | Williams, David A (1720) | Won 2-0 | +181751 |
| 7sealed | 39 | Ionescu, Eugen (1520) | Lost 0-2 | -221729 |
| 8sealed | 67 | van Bemmel, Simon (1523) | Lost 1-2 | -221707 |
| top | average opponent: 1624record: 5-3 | new rating: 1707 | ||
| Grand Prix Hamburg 2002 (Odyssey block) | starting rating: 1540 | |||
| round | table | opponent (rating) | result | Δrating |
| 2block | 7 | Schroder, Alexander (1525) | Won 2-0 | +181558 |
| 3block | 37 | Beushausen, Julian (1536) | Draw 1-1 | 01558 |
| 4block | 87 | Haglund, John (1555) | Won 2-0 | +181576 |
| 5block | 48 | Westman, Thomas (1555) | Won 2-1 | +171593 |
| 6block | 29 | Vornhusen, Gunnar (1496) | Won 2-0 | +161609 |
| 7block | 20 | Borys, Grzegorz (1611) | Won 2-0 | +181627 |
| 8block | 14 | Rottger, Daniel (1600) | Lost 1-2 | -181609 |
| 9block | 9 | Herold, Jim (1861) | Won 2-1 | +221631 |
| 10block | 15 | Peset, Alexandre (1668) | Won 2-0 | +191650 |
| 11block | 8 | Kroll, Tobias (1616) | Won 2-0 | +171667 |
| 12block | 3 | Kuhn, Janosch (1830) | Won 2-1 | +211688 |
| 13block | 2 | Hockwin, Simon (1615) | Won 2-1 | +171705 |
| 14block | 1 | Wendt, Nico (1641) | ID | 01705 |
| Qblock | Hockwin, Simon (1618) | Lost 0-2 | -191686 | |
| top | average opponent: 1623record: 10-2-2 | new rating: 1686 | ||
| Grand Prix Warsaw 2001 (Invasion block) | starting rating: 1500 | |||
| round | table | opponent (rating) | result | Δrating |
| 1block | 109 | Novak, Daniel (1481) | Won 2-0 | +181518 |
| 2block | 17 | Arcimovic, Martin (1501) | Won 2-1 | +171535 |
| 3block | 50 | wojaczek, Lukasz (1536) | Won 2-1 | +181553 |
| 4block | 17 | Spacek, Pavel (1538) | Won 2-0 | +181571 |
| 5block | 17 | Costea, Bogdan (1524) | Won 2-0 | +171588 |
| 6block | 5 | Jones, Craig (1557) | Won 2-1 | +181606 |
| 7block | 1 | Schneiders, Felix (1629) | Lost 0-2 | -181588 |
| 8block | 4 | Sados, Marcin (1591) | Lost 0-2 | -181570 |
| 9block | 25 | Linder, David (1667) | Lost 0-2 | -161554 |
| 10block | 30 | Payen, Laurent (1586) | Lost 0-2 | -181536 |
| 11block | 30 | Piatkowski, Dominik (1542) | Won 2-1 | +191555 |
| 12block | 22 | Purcha, Jean-Pierre (1649) | Won 2-0 | +191574 |
| 13block | 15 | Kondratiev, Yaroslav (1646) | Lost 0-2 | -161558 |
| 14block | 22 | Mroz, Mateusz (1594) | Lost 1-2 | -181540 |
| top | average opponent: 1574record: 8-6 | new rating: 1540 | ||