Jenson Brooksby has been ranked as high as 32 in the world and has one ATP Tour title which came at the Houston 250 in 2025 when he beat Frances Tiafoe in the final. Brooksby competed in all four Grand Slams in 2026 and advanced to the third round at Wimbledon where he lost to Jannik Sinner.

Valentin Royer achieved a career-high world ranking of 54 earlier this year. He competed in all four majors in 2026, making it to the second round at the French Open and Wimbledon losing to Novak Djokovic and Aleksander Zverev, respectively.

Darwin Blanch continues to gain momentum as a 19 year old rising American star. In September, he became the youngest player to ever win an ATP Challenger 125 level tournament with his title in Tiburon, CA. At age 14, Blanch became the second youngest player to ever earn an ATP Tour ranking point.

Colton Smith returns to the MarketBeat Open where he finished runner-up in the inaugural event in 2024. Smith is a two-time Cleveland Open champion and also captured the Little Rock ATP 75 Challenger this past May.

JJ Wolf achieved a career-best ranking of 39 in the world in 2023. He missed time due to injury but is making his way back up the rankings. He won the Vancouver Open earlier this year and has previously made the round of 16 at the Australian Open and has twice made the third round at the US Open.

Nicolas Mejia is the top ranked Colombian player in the world and has five career ATP Challenger Tour titles. Earlier this year he appeared in his first Grand Slam at Wimbledon where he advanced to the second round.

Jack Pinnington Jones has one career ATP Challenger Tour title which came in 2025. Earlier this year at the ATP Dallas 500, Pinnington Jones defeated Flavio Cobolli and Elliot Spizzirri to make his first ATP Tour quarterfinal.

Murphy Cassone returns to Sioux Falls for the third year in a row. He was a semifinalist in the 2024 MarketBeat Open.

Liam Draxl returns to Sioux Falls for the third consecutive year where he captured the doubles title in 2024. Draxl is the fourth ranked Canadian in the world and has been a Davis Cup star for his home country this year going 4-0 in singles matches including a dual clinching win against Brazil and a straight sets win over world number 32 Arthur Rinderknecht in a tie against France.

Dylan Dietrich captured his maiden ATP Challenger title at the Columbus 75 Challenger this October. He currently plays collegiately at the University of Virginia.

Alexis Galarneau is making his second MarketBeat Open appearance after making the round of 16 in 2024 losing to Christopher Eubanks.

Stefan Kozlov returns to Sioux Falls for the second time. He has been ranked as high as 103 in the world. Kozlov has won 6 ATP Challenger Tour titles in his career and has a career win over Grigor Dmitrov.

Abdullah Shelbayh is the first player from Jordan to ever compete in an ATP Tour event. He was a college teammate of Ben Shelton at the University of Florida and has won two career ATP Challenger titles and just finished second at the Columbus Challenger in October.