The Vegas Golden Knights are one of the most unlikely success stories in recent sports history. When the most recent NHL season started, they were 250-1 odds to win the Western Conference and 500-1 to win the Stanley Cup, according to the Westgate Las Vegas SuperBook.
Other recent long shots
In their league's most-recent seasons, 12 teams in the NHL, NFL, MLB and NBA began play with 500-1 or longer odds to win their respective championships.