Rigby Mustangs’ DJ Boudrero connects as the Mustangs face the Runnin’ Rebels Friday at Halliwell Park in Pocatello. | Kyle Riley, EastIdahoSports.com POCATELLO — The Post 4 Runnin’ Rebels and Rigby Mustangs squared off Friday for a double-dip at Pocatello’s Halliwell Park to start their American Legion seasons. Behind a strong pitching effort from Joseph Madsen, the Mustangs took game one of the doubleheader 12-1. Scott Lounsbury led the way off…