Trey Haun
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United States of America
 | |||
| Personal information | |||
|---|---|---|---|
| Full name | Roger Trey Haun III | ||
| Nickname | Manboora Trey | ||
| Born | 2006 (age 18–19) United States of America | ||
| Team information | |||
| Current team | Mamprugu Unicycling Club[1] | ||
| Discipline | Unicycle | ||
| Role | Rider | ||
| Amateur team | |||
| 2022 | Mamprugu Unicycling Club[1] | ||
| Major wins | |||
| NAUCC 2025 - Flatland Expert Male [2] | |||
Medal record
| |||
Roger William Haun III[5] (known as Trey or by his Mampruli name Manboora)[6][7] is a US-born Ghanaian unicyclist.[8][9][10] He is the first person to win medals for Ghana at the Unicycle World Championships in youth categories, taking a silver and bronze in 2022[11][12][13] and gold and bronze in 2024.[14] In 2025, he competed in the North American Unicycling Competition & Convention (NAUCC) and won the gold medal for Expert Male Flatland.
Career
Haun developed interest in unicycling during the COVID-19 pandemic of 2020. He joined the Unicycling Society of America in 2021 and reached USA Flatland Level 6 in 2024.[18]
He represented Ghana at the 2022 Unicycle Convention and World Championships where he won two youth medals making it the nation's first medals in the competition.[4][19][20] At UNICON 20, Haun initially won a youth silver medal in the 30m Wheel Walk Race (Male 15–16 category) and later won the youth bronze medal in the 50m One-Foot Race (Male 15–16 category).[21][22][23]
In July 2024, Haun competed at UNICON 21[24] and won an age category bronze medal in the 30m Wheel Walk Race (Male 17-18 category) and an age category gold medal in the Stillstand competition (Male 0-18 category).[3]
After moving to the US, Haun won several medals at NAUCC 2025 held in Rochester Hills, MI. He took the top Flatland title and placed 2nd in X-Style. Additionally he participated in team events, winning a gold medal on the "Mad For Hockey" hockey team and a gold medal in the new FlatX2 event with Dan Colvin.[2]