The Ontario Hockey League (OHL) is a Major Junior Hockey League based out of Canada (although some teams reside in the United States). The OHL is one of three Major Junior Hockey Leagues which comprise the Canadian Hockey League (CHL). The other two leagues are the Quebec Major Junior Hockey League (QMJHL) and the Western Hockey League (WHL).
20 teams comprise the OHL which is broken down into two conferences and four divisions. The league champion of the OHL participates in the Memorial Cup which is made up of the three CHL champions and the host team.
The OHL has a rich history of producing some of the highest quality NHL players. Notable alumni include Wayne Gretzky, Eric Lindros, Patrick Kane, and John Tavares. Roughly 20% of NHL rosters are currently made up of former OHL players.
The OHL Priority Selection is held every year to draft some of the best 15 and 16 year old hockey players in Canada and the United States (some from overseas). These players are among the best youth hockey prospects in the world and many have high-end professional potential. Players drafted in the OHL are not considered amateurs by the NCAA therefore forfeiting their college eligibility.