Any game above can be played with two or three draw phases and therefore three or four betting rounds. Triple draw lowball, either ace-to-five or deuce-to-seven, has gained some popularity among serious players. The 2004 World Series of Poker included a deuce-to-seven triple-draw lowball event, and each WSOP from 2007 on has featured one event as well. The Poker Player's Championship, which was introduced in 2010 as the replacement for the $50,000 buy-in HORSE tournament that had been in every WSOP since 2006, includes 2–7 triple-draw lowball as one of its rotating games.