Now things are getting complicated, since the site we are using for tracking it has random draw, matches order isn't the one we posted before Round 1.
I don't know what website you are using for generatng the fixtures and how it exactly works. So, I don't know if my suggestion will work.
Use numbers 1 to 9 instead of team names and assume that the draw result for round 1 is as follows.
06 vs 09
01 vs 02
04 vs 03
08 vs 07
Free in this round: 05