The hockey world got some terribly sad news on Monday. The Toronto Maple Leafs announced that prospect Rodion Amirov passed away at the age of 21. Amirov, the Leafs' 2020 first-round draft pick, was diagnosed with a brain tumor last year and was in Germany receiving treatment. pic.twitter.com/fDiDirWIeG— Toronto Maple Leafs (@MapleLeafs) August 14, 2023…