 After participating in his first rookie and main roster training camp with the Avalanche, Toninato was re-assigned to begin the 2017–18 season with AHL affiliate, the San Antonio Rampage on September 27, 2017.He made his professional debut with the Rampage on opening night in a 2–1 victory over the Ontario Reign on October 7, 2017.In his third game he scored his first two professional goals in a 6–2 loss to the Texas Stars on October 21, 2017.