Out of the 24 total countries participating in this year's World Cup, only eight of them will be invited to compete on the World Cup stage at Blizzcon.
Each team has selected a roster of seven players to play in the qualifiers, but the countries that qualify for the finals will have to select another team of seven to compete. Each team has the option to showcase a different team of seven for Blizzcon, but a change in rosters is not mandated.
The rosters premiering in the South Korea qualifier (held in Incheon, South Korea) will be as follows:
Finland
- Timo "Taimou" Kettunen (DPS, Dallas Fuel)
- Jiri "LiNKzr" Masalin (DPS, Houston Outlaws)
- Tuomo "Davin" Leppänen (DPS, Team Gigantti)
- Joona "fragi" Laine (Tank, Philadelphia Fusion)
- Joonas "zappis" Alakurtti (Flex, Florida Mayhem)
- Benjamin "BigGoose" Isohanni (Support, Los Angeles Gladiators)
- Jonas "Shaz" Suovaara (Support, Los Angeles Gladiators)
Hong Kong
- Chi-Yeuing "Moowe" Yip (DPS, Hong Kong Attitude)
- "Mikouw" (DPS)
- Bai "JazZy" Zhongzheng (白忠正) (Tank, LGD Gaming)
- "Yiwind"
- "GZQQ"
- Kin-Long "ManGoJai" Wong (Support, Hong Kong Attitude)
- "Amcrazy"
Japan
- Sean "ta1yo" Taiyo Henderson (DPS, CYCLOPS athlete gaming)
- Yuuma "Dep" Hisamoto (DPS, CYCLOPS athlete gaming)
- Kenji "AmeKen" Hisano (DPS, CYCLOPS athlete gaming)
- Kazuki "SamuraiD" Nouno (Tank, CYCLOPS athlete gaming)
- Kaito "kenmohororo" Yoshida (Flex, CYCLOPS athlete gaming)
- Ryoma "SABAGOD" Tsuji (辻 竜馬) (Support, CYCLOPS athlete gaming)
- Takahiro "CLAIRE" Watanabe (渡辺 孝博) (Support, CYCLOPS athlete gaming)
Russia
- George "ShaDowBurn" Gushcha (DPS, Philadelphia Fusion)
- Andrei "uNFixed" Leonov (DPS, CIS Hope)
- Stanislav "Mistakes" Danilov (DPS, Boston Uprising)
- Denis "Tonic" Rulev (Tank)
- Ilya "Txao" Makarov (Flex, CIS Hope)
- Andrey "Engh" Sholokhov (Support, CIS Hope)
- Alexander "MayN" Mukhin (Support, CIS Hope)
South Korea
- Park "Saebyeolbe" Jong Ryeol (DPS, New York Excelsior)
- Lee "Carpe" Jae-hyeok (이재혁) (DPS, Philadelphia Fusion)
- Kim "Libero Hye-sung (김혜성) (DPS, New York Excelsior)
- Koo "Fate" Pan-seung (구판승) (Tank, Los Angeles Valiant)
- Kim "MekO" Tae Hong (Flex, New York Excelsior)
- Bang "JJoNak" Sung-hyeon (방성현) (Support, New York Excelsior)
- Hong "ArK" Yeon-joon (Support, New York Excelsior)
Taiwan
- Kao "BLUE Erh-Fu (DPS, Nova eSports)
- Lin "ShaiuLin" Keng-Yu (DPS, Hong Kong Attitude)
- Chen "ATing Shao-Hua (Tank, Hong Kong Attitude)
- Liao "TenTen" Jinghan (Tank, Hong Kong Attitude)
- Kao "Kant" Wei-Teng (Flex, Machi Esports)
- Gao "OYO" Rui=Zhou (Support, Nova eSports)
- Wei "Craz1s" Hsiao-chin (Support, Nova eSports)