- All trials for Grand Prix—Yokohama are Sealed Deck with Rochester Draft finals. Tournaments held during September will be run using Mirrodin Block Sealed; events after October 1 will use Champions of Kamigawa.
- The entry fee for each trial is ¥3,000 (included sealed deck).
- Winners of each trial will be awarded a 3-round bye at Grand Prix—Yokohama. Additional byes may be awarded based on attendance.
- Japanese language booster pack prizes will be awarded at each trial as follows: 1st place—20 packs; 2nd place—16 packs; 3rd-4th place—8 packs each; 5th-8th place—5 packs each. Tournaments held during September will award Fifth Dawn booster packs; events after October 1 will award Champions of Kamigawa booster packs.
- For specific details on each trial, contact the organizer listed below (replace the word 'at' in each mail address with the '@' symbol).
Japan
| Event | Date | Location | Address | Contact |
| Chiba 1 | 2004/09/05 | Chiba Shimin Kaikan | 1-1 Kaname-chou, Chuuou-ku, Chiba-shi, Chiba-ken | Takeshi Miyasaka (miyaken at iname.com) |
| Ibaraki | 2004/09/11 | Tsuchiura Kamejiro Plaza | 2-16-4 Chuuou, Tsuchiura-shi, Ibaraki-ken | Takeshi Miyasaka (miyaken at iname.com) |
| Nagoya 1 | 2004/09/11 | Nagoya Waterfront Center | 2-1-17 Irifune, Minato-ku, Nagoya-shi, Aichi-ken | Yuu Kanazawa (dianna at mvb.biglobe.ne.jp) |
| Saitama | 2004/09/20 | Kawagoe Fukushi Center | 1-17-7 Arajuku-machi, Kawagoe-shi, Saitama-ken | Kazuhiro Wakatsuki (kamoya at geocities.co.jp) |
| Shikoku | 2004/10/03 | Matsuyama Shimin Kaikan | Hori-no-uchi, Matsuyama-shi, Ehime-ken | Masayuki Kunimitsu (gga01172 at nifty.com) |
| Nagoya 2 | 2004/10/10 | Nagoya Waterfront Center | 2-1-17 Irifune, Minato-ku, Nagoya-shi, Aichi-ken | Yuu Kanazawa (dianna at mvb.biglobe.ne.jp) |
| Osaka 1 | 2004/10/10 | Yodogawa Kumin Center | 2-1-5 Nonaka-minami, Yodogawa-ku, Osaka-shi, Osaka-fu | Akio Sugaya (akios at xf7.so-net.ne.jp) |
| Hiroshima | 2004/10/11 | Green Arena | 4-1 Moto-machi, Naka-ku, Hiroshima-shi, Hiroshima-ken | Ron Foster (ron.foster at wizards.com) |
| Yokohama | 2004/10/31 | Kanagawa Koukaidou | 1-3 Tomiya-chou, Kanagawa-ku, Yokohama-shi, Kanagawa-ken | Tomoya Nakajima (nakajt08 at f2.dion.ne.jp) |
| Niigata | 2004/11/07 | Toki Messe | 6-1 Bandaijima, Niigata-shi, Niigata-ken | Kazuhiro Wakatsuki (kamoya at geocities.co.jp) |
| Osaka 2 | 2004/11/07 | Minato Kumin Center | 2-1-5 Benten, Minato-ku, Osaka-shi, Osaka-fu | Akio Sugaya (akios at xf7.so-net.ne.jp) |
| Fukuoka | 2004/11/07 | Nishi-shimin Center | 1-4-39 Uchihama, Nishi-ku, Fukuoka-shi, Fukuoka-ken | Ron Foster (ron.foster at wizards.com) |
| Chiba 2 | 2004/11/13 | Chiba Shimin Kaikan | 1-1 Kaname-chou, Chuuou-ku, Chiba-shi, Chiba-ken | Takeshi Miyasaka (miyaken at iname.com) |
| Tokyo | 2004/11/13 | Yoyogi Zenriren Building | 1-36-4 Yoyogi, Shibuya-ku, Tokyo-to | Ron Foster (ron.foster at wizards.com) |
| Kawasaki | 2004/11/14 | Epoch Nakahara | 6-22-5 Kamioda-naka, Nakahara-ku, Kawasaki-shi, Kanagawa-ken | Tomoya Nakajima (nakajt08 at f2.dion.ne.jp) |
| Kyoto | 2004/11/14 | Kyoto-shi Kokusai Kouryuu Kaikan | 2-1 Awata-guchi Torii-chou, Sakyou-ku, Kyoto-shi, Kyoto-fu | Akio Sugaya (akios at xf7.so-net.ne.jp) |
| Sapporo | 2004/11/14 | Higashi-kumin Center | Kita 7-jou Higashi 7, Higashi-ku, Sapporo-shi, Hokkaido | Yuusuke Miwa (kuin at smail.plala.or.jp) |
| Sendai | 2004/10/10 | Hearnel Sendai | 2-12-7 Hon-chou, Aoba-ku, Sendai-shi, Miyagi-ken | Ron Foster (ron.foster at wizards.com) |
Asia
| Country | Date | City | Venue | Contact |
| China | 23-Oct-04 | Tianjin | Tianjin Jiahua Shop | wangyan_0224@sina.com |
| China | 30-Oct-04 | Beijing | Beijing Longtan Hotel | legendtony@263.net |
| China | 30-Oct-04 | Shanghai | Shanghai Tiyu Mansion | sagitta@21cn.com |
| China | 31-Oct-04 | Guangzhou | Guangzhou Chuangmenjie Shop | georgeli@163.net |
| Taiwan | 17-Oct-04 | Tainan | Cartoon Magic Club | gerry24.ca@msa.hinet.net |
| Taiwan | 31-Oct-04 | Taipei | Magic Lair | jiaku_tw@sinamail.com |
| Taiwan | 9-Oct-04 | Taichung | Jia Jiu Card Shop | yuanshin@ms15.hinet.net |
| South Korea | 24-Oct-04 | Seoul | Dobong Public Hall | zikuin@hanmail.net |
| South Korea | 7-Nov-04 | Seoul | Dobong Public Hall | zikuin@hanmail.net |
| South Korea | 17-Oct-04 | Busan | Yang Jung Youth Training Center | sosul@hitel.net |
| Hong Kong | 24-Oct-04 | Hong Kong | Hong Kong Exhibition Centre | ianhelio@hotmail.com |
| Thailand | 31-Oct-04 | Bangkok | Mahboonkrong Centre | arthit16@hotmail.com |
| Hong Kong | 7-Nov-04 | Hong Kong | Hong Kong Exhibition Centre | ianhelio@hotmail.com |
| Malaysia | 24-Oct-04 | Ipoh | Jalan Medan Ipoh 6 | ntneko@hotmail.com |
| Malaysia | 24-Oct-04 | Kuala Lumpur | Petaling Jaya | viva_citi@yahoo.com |
| Malaysia | 31-Oct-04 | Kota Kinabalu | Damai Plaza Phase 3 | luyang23@hotmail.com |
| Malaysia | 31-Oct-04 | Penang | Georgetown | fonphone@yahoo.com |
| Singapore | 17-Oct-04 | Singapore | Serene Centre | gou_uraki@hotmail.com |
| Singapore | 31-Oct-04 | Singapore | Blk 505 Bishan St. 11 #01-426 | gou_uraki@hotmail.com |
| Philippines | 17-Oct-04 | Makati City | Jupiter Street | felix.gonzales@hp.com |
| Philippines | 30-Oct-04 | Quezon City | Eastwood Cybermall | ngrounds@mail.metro.net.ph |
| Hong Kong | 7-Nov-04 | Hong Kong | Hong Kong Exhibition Centre | ianhelio@hotmail.com |
| Hong Kong | 24-Oct-04 | Hong Kong | Hong Kong Exhibition Centre | ianhelio@hotmail.com |