Pirate Protest Is Upheld - NYTimes.com
The last protest that was upheld was 25 years ago.
It seems unlikely McKeon went out to ask for a replay to see if it was a HR. According to the replay rules, IR can only be used for HR to in-play or in-play to HR....or if there was FI on a HR call. The replay was used here to see if there was FI on an in-play call which the IR rule does not seem to allow as written.