While other promotions falter and degenerate into the mixed martial arts’ rear view mirror, Strikeforce soldiers on, the little engine that most decidedly could.

That’s because the promotion consistently combines good matchups while building stars around a loyal Bay Area fan base. Saturday night’s card, headlined by the Frank Shamrock-Nick Diaz main event, is another solid addition to the MMA landscape. Here’s a breakdown of the main card, which will launch the promotion’s new deal with Showtime live from the HP Pavilion in San Jose, Calif.