"When you start talking about 3-0, there are a lot of variables that go into whether or not you are going to allow a guy to swing or not allowing a guy to swing," he said. "One, [Springer] had been in somewhat of a funk, and you're trying to get him the best pitch he can get given the particular at-bat.
"Scherzer is obviously a strikeout pitcher with great put-away stuff. I didn't feel like it would be advantageous to George to allow him to go 3-0 and [Scherzer] lays a fastball in there, and now he's trying to hit his secondary stuff the next three pitches. I felt that was the best pitch he was going to see, and I wanted him to have the opportunity to put his best swing on that pitch."
Porter doesn't automatically give a green light when it's 3-0, so the players have to look for a sign each time. If the pitcher is struggling to throw strikes, Porter is likely going to have them take at least one pitch to try to draw a walk.
"At the same time, you can't give a guy a green light and now he's swinging at a pitch that is not a good pitch and you go, 'Why did you swing at that?'" Porter said. "You have to trust they're going to look at the pitch they want and they're going to put a good swing on it."
Brian McTaggart is a reporter for MLB.com and writes an MLBlog, Tag's Lines. Follow @brianmctaggart on Twitter. This story was not subject to the approval of Major League Baseball or its clubs.