Over 580 combined plate appearances — almost a full season’s worth — Matt Wallner has produced a .251/.366/.500 slash line that’s come with 62 extra-base hits, including 29 home runs. Among the more ...

How does MLB make 2.4 million baseballs a season—and why are they causing so much controversy? From juiced balls to strange changes in performance, this video explores MLB's long history of baseball ...