Marvin Guido Rettenmaier

Marvin Guido Rettenmaier is a German professional poker player who has achieved significant success both live and online. Born in Leonberg, Germany, and later residing in London, he rose to prominence in the early 2010s during the "German Invasion" of high-stakes poker. Marvin Rettenmaier was born in Leonberg, Germany. He developed an interest in poker at a young age and quickly progressed from online micro-stakes to high-stakes games. After turning professional, he moved to London to be closer to the European poker scene and to take advantage of the thriving online poker community there. He began playing under the online alias "marwin" and established himself as a regular in high-stakes cash games and tournaments.

Rettenmaier etched his name into poker history in 2012 by becoming the first player ever to win consecutive World Poker Tour (WPT) Main Events in the same season. His career-best score came at the WPT World Championship at the Bellagio, where he outlasted a star-studded final table to secure $1,196,858. Just two months later, he followed up this triumph by winning the WPT Merit Cyprus Classic for $287,784. These back-to-back victories cemented his reputation as one of the top tournament players in the world. Rettenmaier also recorded numerous other WPT final-table finishes, contributing to his total live earnings of over $7.4 million.

While Rettenmaier is best known for his WPT success, he has also performed consistently at the World Series of Poker (WSOP), with over 20 WSOP cashes to his name. His deep runs in WSOP events include several final-table appearances, showcasing his versatility across different poker variants. In addition to the WSOP, Rettenmaier has cashed in dozens of other major tournaments worldwide, accumulating 222 live cashes according to The Hendon Mob. His consistent performance on the global stage earned him the prestigious 2012 BLUFF Player of the Year award, and he also reached the #1 spot on the Global Poker Index (GPI) rankings.

Online, Rettenmaier competed under the alias "marwin" and was a fixture in high-stakes games. He was part of the "German Invasion" of the online poker world, where German players dominated many of the highest limit tables. His online success helped fund his live tournament endeavors and provided a foundation for his aggressive, analytical playing style. Rettenmaier was known for his ability to adapt to different stack sizes and his precise hand-reading skills, which translated well to both online and live environments.

Often nicknamed "Mad Marvin" for his aggressive yet calculated approach, Rettenmaier employs a positionally-aware style that puts constant pressure on opponents. He is skilled at analyzing hand ranges and making precise post-flop decisions, with a keen sense of when to apply pressure or fold. His emotional control and discipline have been key to his longevity in the game. Rettenmaier remains a popular figure in the poker community, inspiring a new generation of German players. His place in poker history is secured by his record-breaking WPT run and his consistent presence at the top of the global rankings.

Marvin Rettenmaier's total live earnings have reached $7,492,837 as of February 2026, with 222 recorded cashes. His consistency over more than a decade places him among the elite German players in poker history. He earned the 2012 BLUFF Player of the Year award and once held the #1 spot on the Global Poker Index. His back-to-back WPT titles remain a unique achievement.

Rettenmaier's most recent live cash came in February 2026, earning $6,110. He continues to play selectively, maintaining a presence in major events. On social media, his tweets from the early 2010s reflect a lighthearted personality, sharing anecdotes about travel, beer pong tournaments, and poker life. He was known for his active engagement with fans and fellow players during his peak years.