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What does IR stand for?

IR stands for Inherited Runner (baseball; runner on base when a pitcher enters)

This definition appears very rarely and is found in the following Acronym Finder categories:

  • Slang/chat, popular culture

See other definitions of IR

Other Resources:
We have 68 other meanings of IR in our Acronym Attic

Samples in periodicals archive:

44, but he has allowed seven of 13 inherited runners to score - including each of the last five - and if the scoring rules were different and those runs were charged to Tazawa, his ERA would be 3.
He was replaced by Jeff Weaver, who allowed only one of the inherited runners to score on a double-play grounder by Mike Cameron.
After Matt McDonald gave up a run in the eighth, Nick Serino couldn't close it out as he allowed two of three inherited runners to score.