Question: What NBC Poker Championship did the rival and fellow Full Tilt Poker signee of Viktor Bloom appear in?

Mark Vos (born 20 October 1983), also known as 'pokerbok', is a professional poker player from Australia.  Vos was born in Cape Town, South Africa, and attended Waldorf High School in Constantia.  He excelled at mathematics olympiads while in high school, and represented his province in the interprovincial olympiad.  Vos permanently deferred his actuarial studies at Macquarie University, to play poker full-time.  Starting out online with limit hold'em in mid-2004, Vos soon turned his attention to no-limit games, and in short time, earned a reputation as being one of the world's top online poker players, such that he can often be found playing in the most expensive cash games and tournaments online.  When not travelling the world playing poker, Vos plans to divide his time between Australia and South Africa.  In January 2006, Vos finished 8th in the main event of the Crown Australian Poker Championship, winning A$83,600.  As of May 2006, Vos represents the Full Tilt Poker online poker cardroom as a friend of Full Tilt Poker.  His name is reflected in red on Full Tilt tables. <SEP> Thomas Dwan Jr. (born July 30, 1986) is an American professional poker player who played online in the highest-stakes No-Limit Texas hold 'em and Pot-Limit Omaha games, primarily on Full Tilt Poker under the screen name "durrrr".  Dwan has won prize money in live poker tournaments and has appeared on NBC's "National Heads-Up Poker Championship", the fourth, fifth, sixth, and seventh seasons of "Poker After Dark", the third, fourth and fifth seasons of Full Tilt Poker's "Million Dollar Cash Game", and the fifth and sixth seasons of GSN's "High Stakes Poker". <SEP> Full Tilt Poker Championship at Red Rock (also FullTiltPoker.Net Championship at Red Rock) was a seven-week televised shootout poker tournament played at the Red Rock Resort Spa and Casino in Summerlin near Las Vegas, Nevada.  The tournament was sponsored by online poker website Full Tilt Poker and aired by Fox Sports Net.  In each of the first six episodes, six professional poker player affiliated with Full Tilt Poker played a single-table freezeout tournament.  The winner of each freezeout won US$25,000 and advanced to the seven-handed final table.  The seventh seat at the final table was filled by Stefan Rehn, an Internet qualifier.  Tournaments featured a speed poker format, with players having 30 seconds to act on their hands with one 60-second time extension per match. <SEP> Viktor Blom (born 26 September 1990) is a Swedish high-stakes online poker player, best known by the online poker name Isildur1.  His rise to fame drew considerable attention around the poker world in late 2009, when he took part in all ten of the largest pots in online poker history.  In December 2010, it was announced that then-anonymous Isildur1 had joined Team PokerStars Pro.  Blom's identity was revealed by PokerStars on January 8, 2011, at the PokerStars Caribbean Adventure.  Blom parted ways with PokerStars in August 2012 and was quickly signed-up by Full Tilt Poker on October 15, 2012, along with rival high-stakes player Tom Dwan.