Daryl Morey recently sat inside Philadelphia Theatre Company’s rehearsal space and openly laughed. Even though he had seen the material being presented numerous times during the last decade-plus. He was watching the musical Small Ball, a passion project the 76ers’ president of basketball operations has helped shepherd through a lengthy development process. Now, he is commissioning and co-producing a full production at PTC, anchored by a cast and creative team with Broadway and off-Broadway credits alongside standouts from Philly’s theater scene. The show begins performances at Suzanne Roberts Theatre on Friday, before a June 11 opening night. “It’s pretty magical,” Morey told The Inquirer on Saturday morning, before heading to the Sixers’ practice facility for draft and free-agency meetings. “I was just lucky that my first time — and, really, only time — [doing this], we hit on a draft pick. … I laugh off my [behind] every time I come. “The cast, when I came once, was like, ‘I can’t believe you’re the one laughing. You’ve seen it the most.’”