With 20% of the MLB season completed, the A’s are set to debut prospect Gunnar Hoglund as they face the Marlins, looking to improve their starting pitching woes. Meanwhile, the Red Sox’s Walker Buehler is undergoing testing for shoulder discomfort, though team trainers are optimistic he may not face a lengthy injury. In a key NL Central matchup, the Cubs (19-13) will take on the Brewers (16-16), with a potential sweep by Milwaukee allowing them to tie Chicago for the division lead.