FWIW, the SWCCG rule was that no duplicate matchups could occur, but duplicate pairings of opposite matchups were OK.
For example, if Alice played Light Side against Bob's Dark Side in round 1, they couldn't play that match again, but Bob playing Light Side against Alice's Dark Side in a later round was OK.
In this case, Paddy can't play Mat in round 4 because they already played that matchup in round 2, but I'm not seeing too many other issues.
Even rounds are harder because half the field can't play each other, period. Probably a reason a lot of even baseline level sanctioned SWCCG constructed events back in the day ran 6 rounds (I'm NOT suggesting we do that here... unless everyone REALLY wants to...
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