Arenado homered and knocked in three runs as part of a 2-for-5 effort Monday in an Opening Day win over the Diamondbacks.
Arenado was on fire in spring, as he hit .542/.563/1.034 with 16 extra-base hits in 22 exhibition games. He was already an All-Star and arguably the best National League third baseman heading into this season. If the 25-year-old's hot start to 2016 signals further improvement, look out.