Whether it was PJ Higgins challenging a pitch that was overturned and ended the game or whether it was Tyler Stephenson challenging a pitch against the Rockies that resulted in Reds fans getting free pizza, there is no denying ABS has been a great addition to Major League Baseball this season. Early on in the season, the Reds really emphasized using their challenges in high-leverage situations. They wanted to avoid challenging in lower-leverage spots. “We’re trying to stay away from first or second inning, 2-0 (count), nobody on,” Francona told Charlie Goldsmith of Charlie's Chalkboard back in Spring Training. However, that strategy has changed in recent weeks. “Early on, we were like, ‘Let’s save them late, save them late, we’ll need them late,” Friedl said . “A couple of weeks ago, in Minnesota, it turned into, ‘These are the times where if you know he calls these (pitches) out here, use them early. That will bring them back onto the plate.…