A tripping or obstruction tripping penalty in ice hockey and ringette is called by the referee when a player trips an opposing player with their hockey stick or ringette stick, or uses their skate against the other players skate ("slew footing"), causing them to lose balance or fall and obstruct them from making their desired play. This article deals chiefly with ice hockey.
A tripping call usually results in a two-minute minor penalty on the player that caused the infraction. However, if the player is called for slew-footing, they can be assessed a match penalty at the official's discretion. If the player was tripped on a breakaway (with no opponents to pass other than the goaltender), a tripping call may instead result in a penalty shot for the tripped player.
Web site: Rule 91Tripping. July 13, 2017. https://web.archive.org/web/20011024064210/http://nhl.com/hockeyu/rulebook/rule91.html. October 24, 2001. dead. July 13, 2017.