Jack Lisowski is an English professional snooker player from Churchdown, Gloucestershire. He turned professional in 2010 by finishing first in the 2009/2010 PIOS rankings. A left-handed player, he is known for his attacking style of play.

The International Open Series, was a series of snooker tournaments that ran from the 2001/02 season until the 2009/10 season. It was originally called the Open Tour but was renamed in 2005/2006.