Ken Doherty competes during 2019 Snooker World Cup group stage match between Mark Allen/Jordan Brown of Northern Ireland and Ken Doherty/Fergal O'Brien of Republic of Ireland in Wuxi,east China's Jiangsu Province, June 26, 2019. (Photos: Xinhua)

Ken Doherty competes during 2019 Snooker World Cup group stage match between Mark Allen/Jordan Brown of Northern Ireland and Ken Doherty/Fergal O'Brien of Republic of Ireland in Wuxi,east China's Jiangsu Province, June 26, 2019.

Ken Doherty competes during 2019 Snooker World Cup group stage match between Mark Allen/Jordan Brown of Northern Ireland and Ken Doherty/Fergal O'Brien of Republic of Ireland in Wuxi,east China's Jiangsu Province, June 26, 2019.

Jack Lisowski competes during 2019 Snooker World Cup group stage match between Kyren Wilson/Jack Lisowski of England and Hossein Vafaei/Soheil Vahedi of Iran in Wuxi, east China's Jiangsu Province, June 26, 2019.

Kacper Filipiak of Poland competes during the group match between Adam Stepanow/Kacper Filipiak of Poland and Thepchaiya Un-Nooh/Noppon Saengkham of Thailand at the 2019 Snooker World Cup in Wuxi, east China's Jiangsu Province, June 26, 2019. Thailand won 3-2.

Adam Stepanow of Poland competes during the group match between Adam Stepanow/Kacper Filipiak of Poland and Thepchaiya Un-Nooh/Noppon Saengkham of Thailand at the 2019 Snooker World Cup in Wuxi, east China's Jiangsu Province, June 26, 2019. Thailand won 3-2.

Noppon Saengkham of Thailand competes during the group match between Adam Stepanow/Kacper Filipiak of Poland and Thepchaiya Un-Nooh/Noppon Saengkham of Thailand at the 2019 Snooker World Cup in Wuxi, east China's Jiangsu Province, June 26, 2019. Thailand won 3-2.

Kacper Filipiak of Poland competes during the group match between Adam Stepanow/Kacper Filipiak of Poland and Thepchaiya Un-Nooh/Noppon Saengkham of Thailand at the 2019 Snooker World Cup in Wuxi, east China's Jiangsu Province, June 26, 2019. Thailand won 3-2.

Thepchaiya Un-Nooh of Thailand competes during the group match between Adam Stepanow/Kacper Filipiak of Poland and Thepchaiya Un-Nooh/Noppon Saengkham of Thailand at the 2019 Snooker World Cup in Wuxi, east China's Jiangsu Province, June 26, 2019. Thailand won 3-2.

Thepchaiya Un-Nooh of Thailand competes during the group match between Adam Stepanow/Kacper Filipiak of Poland and Thepchaiya Un-Nooh/Noppon Saengkham of Thailand at the 2019 Snooker World Cup in Wuxi, east China's Jiangsu Province, June 26, 2019. Thailand won 3-2.

Soheil Vahedi competes during 2019 Snooker World Cup group stage match between Kyren Wilson/Jack Lisowski of England and Hossein Vafaei/Soheil Vahedi of Iran in Wuxi, east China's Jiangsu Province, June 26, 2019.

Mark Allen competes during 2019 Snooker World Cup group stage match between Mark Allen/Jordan Brown of Northern Ireland and Ken Doherty/Fergal O'Brien of Republic of Ireland in Wuxi,east China's Jiangsu Province, June 26, 2019.

Fergal O'Brien (R) looks at Ken Doherty during 2019 Snooker World Cup group stage match between Mark Allen/Jordan Brown of Northern Ireland and Ken Doherty/Fergal O'Brien of Republic of Ireland in Wuxi,east China's Jiangsu Province, June 26, 2019.

Fergal O'Brien competes during 2019 Snooker World Cup group stage match between Mark Allen/Jordan Brown of Northern Ireland and Ken Doherty/Fergal O'Brien of Republic of Ireland in Wuxi,east China's Jiangsu Province, June 26, 2019.

Ken Doherty (R) reacts during 2019 Snooker World Cup group stage match between Mark Allen/Jordan Brown of Northern Ireland and Ken Doherty/Fergal O'Brien of Republic of Ireland in Wuxi,east China's Jiangsu Province, June 26, 2019.

Ken Doherty competes during 2019 Snooker World Cup group stage match between Mark Allen/Jordan Brown of Northern Ireland and Ken Doherty/Fergal O'Brien of Republic of Ireland in Wuxi,east China's Jiangsu Province, June 26, 2019.

Ken Doherty (1st R) / Fergal O'Brien (2nd R) greet Mark Allen (2nd L)/ Jordan Brown after 2019 Snooker World Cup group stage match between Mark Allen/Jordan Brown of Northern Ireland and Ken Doherty/Fergal O'Brien of Republic of Ireland in Wuxi,east China's Jiangsu Province, June 26, 2019.

Ken Doherty competes during 2019 Snooker World Cup group stage match between Mark Allen/Jordan Brown of Northern Ireland and Ken Doherty/Fergal O'Brien of Republic of Ireland in Wuxi,east China's Jiangsu Province, June 26, 2019.

Fergal O'Brien competes during 2019 Snooker World Cup group stage match between Mark Allen/Jordan Brown of Northern Ireland and Ken Doherty/Fergal O'Brien of Republic of Ireland in Wuxi,east China's Jiangsu Province, June 26, 2019.

Fergal O'Brien competes during 2019 Snooker World Cup group stage match between Mark Allen/Jordan Brown of Northern Ireland and Ken Doherty/Fergal O'Brien of Republic of Ireland in Wuxi,east China's Jiangsu Province, June 26, 2019.

Jordan Brown competes during 2019 Snooker World Cup group stage match between Mark Allen/Jordan Brown of Northern Ireland and Ken Doherty/Fergal O'Brien of Republic of Ireland in Wuxi,east China's Jiangsu Province, June 26, 2019.

Kyren Wilson and Jack Lisowski (R) look on during 2019 Snooker World Cup group stage match between Kyren Wilson/Jack Lisowski of England and Hossein Vafaei/Soheil Vahedi of Iran in Wuxi, east China's Jiangsu Province, June 26, 2019.

Mark Allen reacts during 2019 Snooker World Cup group stage match between Mark Allen/Jordan Brown of Northern Ireland and Ken Doherty/Fergal O'Brien of Republic of Ireland in Wuxi,east China's Jiangsu Province, June 26, 2019.

Ken Doherty (R) and Mark Allen compete during 2019 Snooker World Cup group stage match between Mark Allen/Jordan Brown of Northern Ireland and Ken Doherty/Fergal O'Brien of Republic of Ireland in Wuxi,east China's Jiangsu Province, June 26, 2019.

Ken Doherty smiles during 2019 Snooker World Cup group stage match between Mark Allen/Jordan Brown of Northern Ireland and Ken Doherty/Fergal O'Brien of Republic of Ireland in Wuxi,east China's Jiangsu Province, June 26, 2019.

Ken Doherty (R) and Mark Allen compete during 2019 Snooker World Cup group stage match between Mark Allen/Jordan Brown of Northern Ireland and Ken Doherty/Fergal O'Brien of Republic of Ireland in Wuxi,east China's Jiangsu Province, June 26, 2019.

Hossein Vafaei (R) and Soheil Vahedi look on during 2019 Snooker World Cup group stage match between Kyren Wilson/Jack Lisowski of England and Hossein Vafaei/Soheil Vahedi of Iran in Wuxi, east China's Jiangsu Province, June 26, 2019.

Jack Lisowski competes during 2019 Snooker World Cup group stage match between Kyren Wilson/Jack Lisowski of England and Hossein Vafaei/Soheil Vahedi of Iran in Wuxi, east China's Jiangsu Province, June 26, 2019.

Jack Lisowski competes during 2019 Snooker World Cup group stage match between Kyren Wilson/Jack Lisowski of England and Hossein Vafaei/Soheil Vahedi of Iran in Wuxi, east China's Jiangsu Province, June 26, 2019.