Duel Masters
Takara Tomy created an anime adaptation of the manga Duel Masters from 2006 to 2007. The story revolves around Shobu Kirifuda, a young man who excels at the Duel Masters card game. Shobu aspires to be like his father, a great dueler known as a Kaijudo Master. Shobu must win a local tournament to achieve this aim.
Duel Masters is fairly similar to other anime of the same genre in that the protagonist is a young boy who merely wants to get great at the game. This series is less well-known, most likely because it is aimed at younger viewers and has a simpler plot. Even seasoned aficionados of the genre should give it a shot.
78 episodes
Watch here: https://www.justwatch.com/us/tv-show/duel-masters