Face-off - Wikipedia
https://en.wikipedia.org/wiki/Face-offHockey face-offs (also called 'bully', and originally called 'puck-offs') are generally handled by centres, although some wingers handle face-offs and, very rarely, defensemen. One of the referees drops the puck at centre ice to start each period and following the scoring of a goal. The linesmen are responsible for all other face-offs.