Thoughts on this from ESPN's Buster Olney?
There were a lot of violations of baseball’s unwritten rules along the way, and here are a few:
1. As Greinke seemingly attempted retaliation at Montero, he took multiple shots at him, missing before his final pitch. A lot of players feel like a pitcher gets one shot at retaliation and if he misses, well, it’s on him -- and the fact that Greinke kept throwing at Montero is why the Diamondbacks were upset. (As I wrote at the time of the Carlos Quentin-Greinke incident, Zack does not shy away from these situations; he embraces them.)
2. It’s really kind of silly that Greinke wasn’t ejected after hitting Montero, because everybody in the ballpark knew it was on purpose.
3. Kennedy’s response to Greinke -- a fastball near his head -- was really dangerous, in how close it came to hitting him in the noggin.
Personally, I am surprised there weren't warnings given after the Puig part of this. There is no excuse for throwing at someone's head under any circumstance. I didn't see the AB but would be curious if people agree with Olney that Greinke took multiple throws at Montero.
The real interesting part of the discussion is what the proper reaction should have been Greinke's efforts with Montero. Should he have been tossed? Should he have been plunked somewhere safe (like he plunked Montero)? Should the DBs have let the whole thing drop after Greinke hit Montero for his 2nd DB hit of the game?