Guest host Joe Sullivan and Globe columnist Dan Shaughnessy attempt to make sports great again. They play commissioner for a day and go sport-by-sport to decide which rules need updating in order to improve the games.

Boston area listeners, join the Endless Thread team on July 25 for a behind-the-scenes look at our five-part series, "Infectious: The Strange Past and Surprising Present of Vaccines – And Anti-Vaxxers." Event info: https://wbur.fm/2XXJIts