5 things to know about new Red Sox shortstop Marcelo Mayer, top prospect in 2021 MLB Draft

The final swing of Mayer's prep career was a 450-foot grand slam. The Red Sox weren't expected to pursue a shortstop with the No. 4 pick in the MLB Draft on Sunday, but when Marcelo Mayer — the Eastlake High School shortstop considered by many scouts to be the best in his class — slipped to them, they took the opportunity to draft a teenager with an easy swing and lofty comparisons.