Global Poker Tours Limited (GPTL) is a company within The Rational Group, the owner and operator of the PokerStars and Full Tilt brands.  The Rational Group is ultimately owned by Amaya Inc.  PokerStars is one of the largest sponsors of live poker events in the world. GPTL provides player registration and other services to Casino organisers of PokerStars sponsored events. GPTL is committed to ensuring unrivalled customer experience at the live poker events which it is involved in.