The following is from GracieFighter.com:
Nick's Next Fight
On September 15th there will be a Team B.J Penn vs. Team Cesar Gracie showdown. Penn's pick to face Jake Shields was Charuto Verrisimo and now he has named B.J Penn team member, Mike Aina, as his representative to face Nick Diaz.
This will be Diaz's first fight back since defeating Takanori Gomi and a subsequent suspension by the NSAC. He has kept busy with his usual training schedule, including this past weekend's IronMan triathlon event. The Ironman is a grueling 2.4 mile swim followed by a 112 mile bike ride and then a 26 mile run. Diaz placed 3rd in his age group.