Tiffany Mathias, a self-confessed baseball stadium chaser (and, incidentally, Lale’s sister-in-law), recounts her quest to visit every ballpark in the US, touring the stadiums, chatting to ushers and fans, and sampling the often eccentric local concessions—often as a solo traveler. To watch a game in a new stadium, says Tiffany, is “to be in her happy place.”