If we’re looking at Masters/Champions matches, the team pairs that have played each other more than twice are OPTC/LLL, OPTC/KRÜ, OPTC/XIA, and TL/KRÜ. OPTC/KRÜ and TL/KRÜ don’t really count cause KRÜ has a 0-12 record for those maps, but I think OPTC/LLL (6-3) and OPTC/XIA (5-4) are valid.