[8] On 16 June 2023, Risacher signed his first professional contract with ASVEL, before being immediately loaned out to fellow first-tier club JL Bourg for the 2023–24 season.

[10] Internationally, Risacher featured for JL Bourg in the 2023–24 EuroCup, where the team eventually reached the Finals,[11][12] before losing to fellow French side Paris Basketball.

[13] On 12 May 2024, Risacher was named the Best Young Player of the 2023–24 LNB Élite season, having averaged 10.1 points and 3.8 rebounds in 22 minutes per game.

[12][18] On 6 July 2024, Risacher signed with the Hawks[19] and six days later, he made his NBA Summer League debut against the Washington Wizards, recording 18 points, five rebounds and two assists in a 94–88 loss.

[20] Risacher made his NBA regular-season debut on 23 October, recording seven points and one rebound in 19 minutes played in a 120–116 win over the Brooklyn Nets.

[24] Playing at small forward, Risacher is regarded as a very efficient catch-and-shoot player as well as a good shooter coming off screens or from mid-range.