Question: which American professional poker player purchased  LeggoPoker 

Context articles: Phil Ivey
Howard Lederer
Viacheslav Zhukov
Tommy Angelo (poker player)
Brett Jungblut
Andy Frankenberger
Vanessa Rousso
Dag Palovic
Gregory Brooks
Billy Baxter (poker player)

Phillip Dennis Ivey Jr. (born February 1, 1977), commonly known as Phil Ivey, is an American professional poker player who has won ten World Series of Poker bracelets, one World Poker Tour title, and appeared at nine World Poker Tour final tables.
 Ivey was at one time regarded by numerous poker observers and contemporaries as the best all-around player in the world.
 In 2017 he was elected to the Poker Hall of Fame.
Howard Henry Lederer (born October 30, 1963) is an American professional poker player.
 He has won two World Series of Poker bracelets and holds two World Poker Tour titles.
 Lederer has also contributed to several books on poker strategy and has provided commentary for poker programming.
 He is known by poker fans and players as "The Professor" and is the older brother of professional poker player Annie Duke.
Viacheslav Zhukov (c. 1989) is a Russian professional poker player who has won two World Series of Poker bracelets. Prior to becoming a professional poker player, Zhukov was a geologist in Russia.
 he has career earnings of $940,000, $838,000 of which was earned at the World Series of Poker.
Tommy Angelo (born August 25, 1958) is an Oakland, California professional poker player, writer, and coach.
 Angelo was a career musician in the 1980's, performing rock and country on drums and piano.
 In 1990, he became a full-time professional poker player.
 Since then has since written 100 magazine articles, written and produced 18 poker training videos, and written and published three books on poker.
Brett Jungblut is an American professional poker player, born in Atlantic City, New Jersey and based in Las Vegas, Nevada.
 With only one class left to graduate college, Jungblut dropped out to pursue his dream as a professional poker player.
Andy Frankenberger is a professional poker player and former equity derivatives trader from New York City.
 In his first year as a professional poker player, Frankenberger was named World Poker Tour (WPT) Season IX Player of the Year.
 Card Player Magazine described this as one of poker's best rookie years in a September 2011 cover story.
 Frankenberger followed this up by winning back to back bracelets at the World Series of Poker in 2011 and 2012.
 He has been prominently featured in financial media including The Wall Street Journal, Fox Business Network, and Bloomberg Television.
Vanessa Ashley Rousso (born February 5, 1983) is an American professional poker player.
 Born in White Plains, New York, Rousso holds dual citizenship with the United States and France.
 Rousso was a member of Team PokerStars from 2006 to 2015, with the online name Lady Maverick.
 She is a spokesperson for GoDaddy.com.
 She has earned money as a professional poker player since 2005, and has become one of the game's sex symbols.
Dag Palovič (* 4 January 1975, Bratislava) is a Slovak professional poker player, businessman and a former TV host.
 Since 1 January 2011, he is a member of PokerStars Team Pro, first and as of October 2011 only sponsored poker player from Slovakia.
 He is best known for making two European Poker Tour (EPT) final tables as well as being the only player from Slovakia who has cashed in the World Series of Poker (WSOP) Main Event, finishing 120th in 2009 and 37th in 2010.
 As of March 2013, he is second leading Slovak all time money list with career earnings of $909,405 and is also an author of first Slovak poker book on poker titled "Ako sa stať poker pro" (How to become a poker pro), co-authored by 1983 World Series Of Poker champion Tom McEvoy.
 From 2000 until 2004 he was CEO and Chairman Of The Board of Directors of "ad pepper media Slovakia, a.s.", the daughter company of one of the world´s leading e-Adverising german-dutch agency "ad pepper media International N.V." for Slovak and Czech Republic.
Gregory Brooks is an entrepreneur and former professional poker player.
 He began his poker career as an online player on sites such as PokerStars and then moved to no limit tournaments where he won the 2011 World Poker Tour L.A. Poker Classic, defeating Vivek Rajkumar for a prize of $1,654,120.
 Brooks is the co-founder of Skorb, a venture that he began with his brother in 2011.
 He is also the founder of LeggoPoker, a community-based website for teaching poker strategy through videos and one-on-one training.
 The company was purchased by Phil Ivey's IveyPoker in 2013.
 Brooks also founded the website Textbook Assault which aggregates pricing of textbooks from multiple websites such as Amazon.com, Chegg.com, Barnes and Noble, and eCampus.com.
William E. Baxter, Jr. (born 1940) is an American professional poker player and sports bettor.
 He has won numerous tournament titles in his career as a professional poker player, including seven World Series of Poker bracelets.