Aaron Nola has spent the first five weeks of the 2018 season establishing himself as one of the best starters in the National League. Nola, 24, ranked sixth in the National League in ERA (2.17) and was third in WHIP (0.920) as of Monday. "One of the things about Noles that's so impressive is his ability to make in-game adjustments," Phillies manager Gabe Kapler told reporters after Nola's last start.