I'm in the middle of typing playoff previews and I just realized the Chicago Blitz are the only team in the league with a Southwest team on their schedule that didn't lose. Of course they only had 1 game against that division, a tie against San Antonio.
Pittsburgh finished 2-2 against the Southwest, beating Memphis and San Antonio while losing to Houston and Oklahoma.
San Jose was 1-3 against the Southwest, getting that win against Oklahoma.
Chicago was 0-0-1 against the Southwest as noted above.
That's it, the complete list of that division's non division blemishes this season.