The 15th pick in the 2020 NHL Draft, Rodion Amirov, has been diagnosed with a brain tumor, his team, the Toronto Maple Leafs said. The 20-year-old Russian forward signed a three-year, entry-level contract with the team last April. “I regret to inform our fans that Rodion Amirov has been diagnosed with a brain tumor,” Maple Leafs GM Kyle Dubas said in a statement. Amirov began the season with Salavat Yulaev Ufa in the Kontinental Hockey League (KHL) before sustaining an injury. “New, unrelated symptoms that required ongoing extensive investigations” developed during his injury recovery, the sta…