It has already been an amazing season for rookie hitters but while we continue to marvel at how Vladimir Guerrero Jr. hits baseballs so hard, at the immediate power of Austin Riley and at the statistical versatility and upside of Fernando Tatis Jr., one player stands out the most. New York Mets first baseman Pete Alonso reached base six times in Atlanta on Tuesday and is hitting .274 with a pace for 53 home runs and 126 runs batted in. The Mets might be a mess, but their No.