between the pipes

(ice hockey, lacrosse, idiomatic) Between the goalposts; with respect to or playing the position of goaltender.

Example: 1927, "Burghs Back In Race for Eastern Hockey Title", Ottawa Citizen (Canada), 12 March (retrieved 26 Dec. 2009):
  A shutout performance calls for a brilliant display between the pipes and Bill was right on the job.
2009, Shawn P. Roarke, "Finland's biggest strength is between the pipes," (National Hockey League), 19 Feb. (retrieved 26 Dec. 2009):
  [T]he Finns might just have the best goaltending in the 12-team tournament.