Dansby Swanson, Braves

The first overall pick in the 2015 draft, the 25-year-old Swanson hasn't yet put it all quite together in the big leagues. In 136 games last year, he batted .238 with 14 homers, 25 doubles, and 10 stolen bases. He did cut his errors in half though with 10 after committing 20 in 2017.