The MMA Digest

Robbie Lawler (left) and “Ninja” Rua pose after Friday’s weigh-in. EliteXC middleweight champion Rua will defend against Lawler, the ICON Sport middleweight kingpin, in Saturday’s pick ‘em main event on SHOWTIME (10 p.m. ET/PT, delayed on the west coast).

Highly regarded Nick Diaz (left) makes his EliteXC and SHOWTIME debut against local favorite Mike Aina in one of the televised bouts.

Unbeaten women’s superstar Gina Carano (left), who made MMA history in February on SHOWTIME, faces a stern test when she meets Tonya Evinger.

Top-10 welterweight Jake Shields (left) returns to the network to face Renato “Charuto” Verissimo.

Joey Villasenor (left) faces Riki Fukuda in one of the televised bouts.

In one of the undercard fights that will be streamed live on the Internet at ProElite.com following the SHOWTIME portion of the show, Tyson Nam (left) faces Albert “Always Bad” Manners.