We have a Patreon! Click here to become a patron, or read the blog to learn more!
   
Ishikawa, Ren
Current rating: 1990 (#151)

Grand Prix Niigata 2009 (M10 limited) starting rating: 1869
round table opponent (rating) result Δrating
4sealed 1 Asahara, Akira (1959) Won 2-1 +201889
5sealed 10 Kimura, Kazuki (1717) Won 2-0 +151904
6sealed 11 Okada, Wataru (1749) Won 2-1 +151919
7sealed 1 Nakano, Satoshi (1419) Won 2-1 +91928
8sealed 1 Mori, Katsuhiro (2005) Won 2-1 +201948
9sealed 3 Suzuki, Fumito (1674) Won 2-1 +131961
10draft 30 Saito, Takaya (1771) Won 2-0 +141975
11draft 9 Inoue, Toru (1658) Lost 1-2 -231952
12draft 12 Kurihara, Shingou (2157) Won 2-0 +221974
13draft 5 Kuroda, Masashiro (1979) Won 2-1 +181992
14draft 35 Saito, Takaya (1813) ID 01992
15draft 1 Kurihara, Shingou (2159) ID 01992
Qdraft Watanabe, Yuuya (1989) Won 2-0 +182010
Sdraft Ikeda, Tsuyoshi (1922) Lost 0-2 -201990
top average opponent: 1855record: 10-2-2 new rating: 1990

Pro Tour Kyoto 2009 (CON standard) starting rating: 1920
round table opponent (rating) result Δrating
1standard 82 Cnotalski, Artur (1659) Lost 0-2 -231897
2standard 178 Dolbeer, Jed (1705) Lost 1-2 -211876
3standard 172 Hemmer, Philipp (1664) Lost 1-2 -221854
4standard 176 Rayson, Shawn (1622) Won 2-0 +141868
5draft 140 Oberg, Kenny (1927) Draw 1-1 +11869
top average opponent: 1715record: 1-3-1 new rating: 1869

Grand Prix Kobe 2008 (Lorwyn block) starting rating: 1855
round table opponent (rating) result Δrating
3block 105 Yano, Kunihiro (1593) Won 2-1 +131868
4block 37 Suzuki, Nobuyoshi (1564) Won 2-1 +131881
5block 10 Ishii, Hayato (1600) Won 2-1 +131894
6block 9 Hirashima, Yuutarou (1550) Lost 0-2 -241870
7block 44 Nakada, Yuuji (1564) Won 2-0 +121882
8block 26 Furukawa, Hiroki (1582) Won 2-0 +131895
9block 20 Kadooka, Toshiyuki (1696) Won 2-1 +141909
10block 8 Nagaoka, Takayuki (1860) Lost 0-2 -181891
11block 16 Shiozu, Ryouma (1823) Won 2-0 +161907
12block 5 Sawada, Ken (1673) Draw 1-1 -41903
13block 12 Kanno, Masashi (1610) Won 2-0 +131916
14block 7 Komuro, Shuu (1927) Lost 0-2 -181898
15block 36 Mihara, Makihito (2119) Won 2-1 +221920
top average opponent: 1705record: 9-3-1 new rating: 1920

Grand Prix Bangkok 2007 (LRW limited) starting rating: 1830
round table opponent (rating) result Δrating
4sealed 40 Surapanpitak, Chet (1488) Won 2-1 +121842
5sealed 14 Wong, Lucas (1612) Won 2-1 +141856
6sealed 2 Lim, Ernest (1569) Lost 1-2 -231833
7sealed 35 Jirapongputtana, Montree (1533) Won 2-1 +131846
8sealed 11 Kurihara, Shingou (1992) ID 01846
9draft 3 Fujita, Osamu (1986) Won 2-0 +201866
10draft 7 Ong, Kok Seng (1838) Lost 1-2 -181848
11draft 14 Hiranyasiri, Pongsiri (1578) Won 2-1 +131861
12draft 8 Jaro, Ogie (1676) Won 2-0 +151876
13draft 20 Tan, Steven (1710) Lost 0-2 -211855
top average opponent: 1698record: 6-3-1 new rating: 1855

Pro Tour Yokohama 2007 (Time Spiral block) starting rating: 1911
round table opponent (rating) result Δrating
1block 29 Aoki, Ryousuke (1720) Lost 0-2 -211890
2block 161 Watanabe, Yuuya (1665) Lost 0-2 -221868
3block 162 Agerberg, Mattias (1499) Lost 0-2 -241844
4block 148 Yamane, Masahiro (1473) Won 2-0 +111855
5block 129 Jordan, Chris (1474) Lost 1-2 -251830
top average opponent: 1566record: 1-4 new rating: 1830

Grand Prix Kyoto 2007 (PLC standard) starting rating: 1849
round table opponent (rating) result Δrating
3standard 111 Okamura, Hideki (1551) Won 2-1 +121861
4standard 50 Takesue, Chikara (1496) Won 2-0 +121873
5standard 4 Muranaka, Hiroya (1571) Won 2-1 +131886
6standard 7 Shimizu, Naoki (1571) Lost 0-2 -241862
7standard 15 Tsukamoto, Tatsushi (1574) Won 2-1 +131875
8standard 34 Katou, Ichirou (1615) Lost 0-2 -231852
9standard 56 Nagai, Kentarou (1571) Won 2-0 +131865
10standard 63 Kabeshita, Yoshito (1544) Won 2-1 +131878
11standard 43 Nakamura, Yuichiro (1614) Won 2-0 +131891
12standard 37 Mitsuya, Kazuhiko (1884) Won 2-1 +181909
13standard 5 Kishida, Hirokazu (1622) Won 2-0 +131922
14standard 33 Kadooka, Toshiyuki (1679) Won 2-0 +131935
15standard 3 Azuma, Motokiyo (1881) ID 01935
Qstandard Tomii, Tsubasa (1603) Lost 0-2 -241911
top average opponent: 1627record: 10-3-1 new rating: 1911

Pro Tour Geneva 2007 (PLC draft) starting rating: 1804
round table opponent (rating) result Δrating
1draft 114 Maij, Rosario (1939) Won 2-0 +201824
2draft 136 Krempels, Craig (1854) Won 2-0 +191843
3draft 34 Koppenhagen, Nick (1582) Won 2-0 +131856
4draft 59 Von Kalkstein, Christian (1848) Won 2-1 +181874
5draft 24 Chambers, Adam (1971) Lost 1-2 -161858
6draft 8 Meulders, Fried (1819) Won 2-0 +171875
7draft 23 Ljungberg, William (1864) Lost 1-2 -181857
8draft 53 Manor, Aylon (1832) Lost 1-2 -191838
9draft 39 Ogura, Ryou (2043) Lost 0-2 -141824
10draft 47 De Rosa, Antonino (1880) Won 2-0 +191843
11draft 63 McDaniel, Chris (1770) Won 2-0 +171860
12draft 34 Lippincott, Don (1749) Lost 1-2 -201840
13draft 2 Nahodil, Petr (1640) Won 2-0 +141854
14draft 19 Black, Samuel (1615) Won 2-0 +141868
15draft 21 Scott-Vargas, Luis (1800) Lost 1-2 -191849
top average opponent: 1814record: 9-6 new rating: 1849

Grand Prix Yamagata 2006 (TSP limited) starting rating: 1835
round table opponent (rating) result Δrating
3sealed 44 Suzuki, Yuuji (1679) Won 2-0 +161851
4sealed 47 Iwasaki, Yuusuke (1567) Lost 0-2 -231828
5sealed 47 Otsuka, Hiroki (1489) Lost 1-2 -241804
top average opponent: 1578record: 1-2 new rating: 1804

2005 World Championship (mixed) starting rating: 1786
round table opponent (rating) result Δrating
1standard 119 Roar, Rasmus (1482) Lost 1-2 -241762
2standard 105 Mueller, Andre (1620) Won 2-1 +161778
3standard 87 Wong, Chun Hung (1540) Lost 0-2 -231755
4standard 119 Lemmetyinen, Lari (1418) Won 2-1 +121767
5standard 60 Polgary, Mikael (1820) Won 2-1 +191786
6standard 46 Hayrynen, Andrei (1635) Won 2-1 +161802
7draft 46 Kuo, Tzu-Ching (1733) Won 2-1 +161818
8draft 21 Rutar, Andrej (1692) Won 2-0 +161834
9draft 80 Ootsuka, Koutarou (1823) Won 2-1 +181852
10draft 110 Hoaen, Rich (1990) Lost 0-2 -161836
11draft 107 Eigner, Nikolaus (2006) Won 2-0 +211857
12draft 119 De Rosa, Antonino (1983) Lost 0-2 -151842
13extended 21 Maaten, Rogier (1926) Lost 0-2 -171825
14extended 30 Floch, Ivan (1724) Won 2-0 +161841
15extended 22 Jardine, Julian (1653) Won 2-1 +151856
16extended 11 Shiozu, Ryouma (1861) Lost 0-2 -181838
17extended 21 Balogh, Andras (1708) Won 2-0 +161854
18extended 15 Ootsuka, Koutarou (1839) Lost 1-2 -191835
top average opponent: 1747record: 11-7 new rating: 1835

Pro Tour Nagoya 2005 (COK rochester) starting rating: 1805
round table opponent (rating) result Δrating
1rochester 65 Dictus, Mark (1683) Won 2-0 +161821
2rochester 58 Meyerson, Jeffrey (1505) Won 2-0 +121833
3rochester 5 da Costa Cabral, Bernardo (1882) Lost 0-2 -171816
4rochester 33 Refsdal, Thomas (1537) Lost 0-2 -231793
5rochester 82 Pils, Florian (1665) Won 2-0 +161809
6rochester 29 Hauptmann, Aaron (1494) Lost 0-2 -231786
top average opponent: 1628record: 3-3 new rating: 1786

Grand Prix Yokohama 2004 (COK limited) starting rating: 1704
round table opponent (rating) result Δrating
3sealed 105 Jitsukawa, Naofumi (1611) Won 2-1 +161720
4sealed 1 Ikeda, Kei (1715) Lost 1-2 -181702
5sealed 124 Sato, Kimihiko (1634) Won 2-1 +171719
6sealed 33 Kitagawa, Tomoaki (1561) Won 2-1 +151734
7sealed 51 Fujimoto, Taichi (1627) Won 2-0 +161750
8sealed 64 Kaneko, Masami (1642) ID 01750
9rochester 8 Noguchi, Keita (1557) Won 2-1 +151765
10rochester 15 Nishiwaki, Kazuhisa (1660) Won 2-0 +161781
11rochester 18 Kato, Kazuki (1837) Lost 0-2 -171764
12rochester 15 Okada, Wataru (1712) Won 2-0 +171781
13rochester 13 Nose, Koji (1821) Won 2-0 +191800
14rochester 24 Okamoto, Jin (1930) Won 2-0 +201820
Qrochester Asahara, Akira (2006) Lost 1-2 -151805
top average opponent: 1716record: 9-3-1 new rating: 1805

Grand Prix Nagoya 2004 (5DN standard) starting rating: 1754
round table opponent (rating) result Δrating
3standard 50 Igeta, Hirofumi (1576) Lost 0-2 -221732
4standard 143 Inanaga, Nobuyuki (1506) Won 2-0 +141746
5standard 165 Tamura, Ryo (1585) Lost 0-2 -211725
6standard 140 Matsumura, Takehiko (1533) Lost 1-2 -211704
top average opponent: 1550record: 1-3 new rating: 1704

Grand Prix Shizuoka 2003 (MRD limited) starting rating: 1663
round table opponent (rating) result Δrating
3sealed 47 Sakurada, Kouichi (1602) Won 2-1 +171680
4sealed 22 Hirabayashi, Kazuya (1657) Lost 1-2 -191661
5sealed 49 Iizuka, Shun (1529) Won 2-0 +161677
6sealed 50 Kondo, Masahiro (1559) Won 2-1 +161693
7sealed 12 Nagato, Kazuo (1591) Won 2-0 +161709
8sealed 7 Tamura, Ryo (1569) Won 2-1 +151724
9rochester 4 Yamamoto, Kentaro (1631) Won 2-0 +171741
10rochester 8 Minami, Masashi (1698) Won 2-0 +171758
11rochester 23 Sasagawa, Tomohide (1710) Lost 1-2 -191739
12rochester 24 Minami, Masashi (1698) Won 2-0 +171756
13rochester 15 Ikeda, Kei (1637) Lost 0-2 -201736
14rochester 10 Ibamoto, Masami (1714) Won 2-1 +181754
top average opponent: 1633record: 9-3 new rating: 1754

Grand Prix Yokohama 2003 (Onslaught block) starting rating: 1696
round table opponent (rating) result Δrating
3block 127 Koizumi, Kenta (1540) Lost 1-2 -211675
4block 216 Takagi, Kuniyuki (1517) Won 2-0 +151690
5block 78 Yamaguchi, Teruyuki (1582) Lost 1-2 -201670
6block 124 Kobayashi, Hiromasa (1470) Won 2-0 +141684
7block 100 Ishii, Hayato (1573) Lost 1-2 -201664
8block 185 Takakuwa, Yusuke (1533) Won 2-0 +161680
9block 113 Terasawa, Kazuya (1725) Lost 0-2 -171663
top average opponent: 1563record: 3-4 new rating: 1663

Grand Prix Utsunomiya 2002 (ONS rochester) starting rating: 1682
round table opponent (rating) result Δrating
3sealed 9 Sugiyama, Kouichi (1556) Won 2-1 +161698
4sealed 22 Fujieda, Isamu (1546) Won 2-1 +151713
5sealed 18 Mukuno, Yuuji (1585) Lost 1-2 -201693
6sealed 69 Ishida, Atsushi (1531) Won 2-0 +151708
7sealed 26 Iwai, Tsuyoshi (1708) Won 2-1 +181726
8sealed 133 Hiyama, Taku (1575) Won 2-1 +151741
9rochester 8 Hashimoto, Rei (1583) Lost 1-2 -211720
10rochester 17 Uesugi, Masatoshi (1581) Won 2-0 +161736
11rochester 9 Shimura, Ichirou (1613) Lost 0-2 -211715
12rochester 13 Tanaka, Hisaya (1587) Won 2-1 +161731
13rochester 2 Andou, Koutarou (1667) Lost 1-2 -191712
14rochester 11 Ikeda, Tsuyoshi (1803) Lost 0-2 -161696
top average opponent: 1611record: 7-5 new rating: 1696

Grand Prix Fukuoka 2002 (TOR limited) starting rating: 1652
round table opponent (rating) result Δrating
2sealed 11 Arai, Jin (1550) Won 2-0 +161668
3sealed 49 Hamasaki, Yuta (1536) Won 2-1 +161684
4sealed 19 Kashima, Akihiro (1686) Lost 1-2 -181666
5sealed 68 Chiang, Kang Nien (1571) Won 2-0 +161682
6sealed 50 Morita, Masahiko (1808) Lost 1-2 -161666
7sealed 70 Umeno, Kengo (1541) Won 2-0 +161682
top average opponent: 1615record: 4-2 new rating: 1682

Grand Prix Sendai 2001 (extended) starting rating: 1690
round table opponent (rating) result Δrating
4extended 37 Haneda, Daisuke (1649) Lost 0-2 -181672
5extended 77 Izumi, Shinji (1572) Lost 0-2 -201652
top average opponent: 1611record: 0-2 new rating: 1652

Grand Prix Shizuoka 2001 (ODY limited) starting rating: 1605
round table opponent (rating) result Δrating
1sealed 93 Kojima, Mitsuhiro (1500) Won 2-0 +161621
2sealed 139 Fukuchi, Takahiro (1497) Won 2-1 +161637
3sealed 87 Endo, Go (1519) Won 2-1 +151652
4sealed 31 Sasaki, Yusuke (Tokyo) (1454) Lost 1-2 -211631
5sealed 115 Tanaka, Kazunori (1502) Won 2-1 +151646
6sealed 30 Ishibashi, Katsumi (1554) Won 2-0 +171663
7sealed 15 Sato, Hitoshi (1570) Won 2-0 +161679
8sealed 9 Harada, Hiroshi (1639) Won 2-0 +171696
9rochester 9 Morita, Masahiko (1655) Lost 0-2 -181678
10rochester 19 Iino, Ryuji (1507) Won 2-0 +151693
11rochester 11 Mukuno, Yuuji (1596) Won 1-0 +161709
12rochester 8 Watanabe, Masanari (1629) Lost 1-2 -201689
13rochester 13 Higashino, Masayuki (1756) Lost 0-2 -161673
14rochester 19 Komiya, Tadayoshi (1667) Won 2-1 +171690
top average opponent: 1575record: 10-4 new rating: 1690

Grand Prix Kobe 2001 (Invasion block) starting rating: 1464
round table opponent (rating) result Δrating
3block 146 Goto, Takashi (1536) Won 2-0 +201484
4block 9 Yamasaki, Yudai (1564) Draw 1-1 +11485
5block 71 Ito, Tai (1501) Won 2-1 +181503
6block 38 Fredembach, Clement (1535) Won 2-1 +191522
7block 20 Noguchi, Masami (1569) Won 2-0 +191541
8block 8 Yasutomi, Hiroto (1592) Lost 1-2 -171524
9block 29 Kawashima, Keisuke (Kumamoto) (1588) Won 2-0 +191543
10block 21 Yokoyama, Tadashi (1700) Draw 1-1 +31546
11block 38 Takagi, Takeshi (1653) Won 2-1 +201566
12block 22 Maki, Koichiro (1510) Won 2-0 +171583
13block 13 Akemitsu, Hiroaki (1628) Won 2-1 +191602
14block 8 Shiozu, Ryouma (1683) Draw 1-1 +11603
15block 10 Kinoshita, Junichi (1620) Lost 1-2 -181585
16block 19 Hoshino, Hiroaki (1660) Won 2-0 +201605
top average opponent: 1596record: 9-2-3 new rating: 1605

Grand Prix Sapporo 2000 (PCY limited) starting rating: 1500
round table opponent (rating) result Δrating
1sealed 75 Sasaki, Takashi (1500) Lost 0-1 -181482
2sealed 84 Suzuki, Mayumi (1500) Lost 0-2 -181464
top average opponent: 1500record: 0-2 new rating: 1464