(Photos courtesy of UFC.com.)

According to a new report on FiveOuncesofPain, a welterweight rematch between Nick Diaz and Joe Riggs has been added to the undercard of Strikeforce’s "Carano vs. Cyborg" event (August 15th, San Jose). Due to the show’s main card featuring as many as three 25-minute matches — the historic headliner, the lightweight championship rematch between Josh Thomson and Gilbert Melendez, and the still-unconfirmed heavyweight title fight between Alistair Overeem and Brett Rogers — Diaz vs. Riggs II may not make the televised Showtime broadcast.

The two fighters first met at UFC 57 in February 2006, where Riggs won a unanimous decision; infamously, they continued their fight later that night at a hospital. Bad Boy and Diesel were both successful at "Lawler vs. Shields" earlier this month, with Diaz choking out Scott Smith and Riggs outlasting Phil Baroni. Considering their tense history and shared love of trash-talk, this should be a great one. No other matches have been confirmed for "Carano vs. Cyborg" besides the ones mentioned above, though Roger Gracie and Erin Toughill are expected to participate.


In Octagon news, a bout between highly-regarded welterweights Mike Swick and Martin Kampmann has been booked for UFC 103 (September 19th, Dallas). As MMA Junkie hears it, the match could be used to determine the UFC’s next title challenger at 170 pounds, after Georges St. Pierre and Thiago Alves battle for the belt next month at UFC 100. Both fighters are undefeated since dropping from middleweight earlier in ther careers. Swick is on a 4-0 run at welterweight, and most recently wrecked Ben Saunders at this month’s UFC 99. Kampmann has gone 2-0 at 170, most recently winning an exciting split decision over Carlos Condit in April. Said Swick of the matchup: "I’m going to go in there and try to show that I deserve a big fight in my next fight. If I win this next fight, that will put me at 9-1 in the UFC against some tough opponents. I definitely think I deserve a big fight."

Your predictions?