Ryukyu Golden Kings (2021–2024) On June 18, 2021, Watanabe signed with the
Ryukyu Golden Kings of the
B.League. On September 4, he sustained an injury on his right elbow during a practice match against the
Akita Northern Happinets. Three days later, Watanabe underwent surgery after being diagnosed with a fractured
radial head. He was estimated to be sidelined between four and five months and was entered in the Injury List. On December 24, Watanabe was removed from the list and was cleared to participate fully in practices. On January 17, 2022,
CT scan results revealed the displacement of bone fragments in his right elbow. He underwent
closed reduction and
bone graft surgeries at Ryukyu University Hospital on January 20. On January 22, Watanabe was ruled out for the entire 2021–22 season. On August 5, Watanabe went under the knife for the third time in less than a year, receiving a radial head replacement surgery for his injured elbow in
Los Angeles. He was estimated to be sidelined for four to six months. On February 5, 2023, Watanabe made his professional debut against the
Toyoma Grouses, scoring seven points and grabbing six rebounds in 12 minutes of play. Watanabe helped the Golden Kings defeat the
Chiba Jets to claim their first B.League championship title. On June 7, the team announced they signed Watanabe for the 2023–24 season.
Shinshu Brave Warriors (2025-present) Hugh would compete with the Shinshu Brave Warriors of the B League's 2nd division for the 2025-2026 season. On November 11th, he would score a season high 11 points in a game against Fukushima. == National team career ==