12 years as a member of Team PokerStars, Negreanu announced he and PokerStars were parting ways. Heads-up challenge On July 29, 2020, after a years-long feud with fellow poker pro Doug Polk, Negreanu publicly accepted a challenge to a high-stakes grudge match. They played 25,000 hands of No-Limit Texas Hold'em at $200/$400 stakes. The duel ended on 4 February 2021 with Polk winning approximately $1,200,000 over 25,000 hands. High Stakes Duel II In 2021, Daniel Negreanu challenged Phil Hellmuth to a heads up match after Phil Hellmuth was critical of Daniel's plays in his heads up match against Doug Polk. The two played three rounds in the High Stakes Duel II by PokerGo, with the buy-in doubling from the initial $50,000 to $200,000 by the third round. Phil Hellmuth beat Negreanu in all three rounds, winning a total of $350,000. As per the rules, he was allowed to cash out his winnings after winning three rounds, although Negreanu wanted to continue playing. Poker Masters In September 2021, Daniel Negreanu had some success in PokerGo's Poker Masters tournaments. He placed 3rd in Poker Masters 2, a $10,000 buy-in event, and won $103,200. He placed 1st in Poker Masters 5, another $10,000 buy-in event, winning $178,200. In the tenth event, a $25,000 buy-in tournament, he placed 3rd for $152,000. Other poker activities Upon opening, the Wynn Las Vegas resort recruited him as their "Poker Ambassador" to play for any stake in their poker room. The arrangement lasted until October 2005, when he opted out because it was restricting his ability to play for high stakes outside the Wynn. Negreanu has played poker on various TV shows such as Late Night Poker, Poker After Dark, and High Stakes Poker, as well as serving as a commentator and stand-in host on Ultimate Poker Challenge. He also appeared in the third season of Poker Superstars Invitational Tournament. In January 2007, Negreanu appeared in the Fox Reality original series Rob and Amber: Against the Odds, in which he mentored reality television personality Rob Mariano in his bid to become a professional poker player. In May 2008, Negreanu's book Power Hold'em Strategy was released. The book resembles the Doyle Brunson book Super/System in that it has contributions from several other poker players, including Evelyn Ng, Erick Lindgren, Paul Wasicka, Todd Brunson, and David Williams. Negreanu's section presents and explains the strategy of small ball poker. Negreanu is