The program guide doesn't show this as HD, but Showtime's website does.
WBO Heavyweight Champion
Lamon Brewster
vs.
Pan Pacific Heavyweight Champion
Kali Meehan
Cory Spinks vs. Miguel Angel Gonzalez
Sat, September 4 at 10:00 PM ET/PT
from Mandalay Bay Resort & Casino, Las Vegas, NV

WBO Heavyweight Champion
Lamon Brewster
vs.
Pan Pacific Heavyweight Champion
Kali Meehan
Cory Spinks vs. Miguel Angel Gonzalez
Sat, September 4 at 10:00 PM ET/PT
from Mandalay Bay Resort & Casino, Las Vegas, NV