We got a 3-way tie in group 1 between Leoric, Perdunok and Diego.
I can think of two options to solve this:
1) Since Perdunok had 1 tied round against Sheepworm, Leoric and Diego performed better and they would advance. The problem with this option is that drawn rounds are traditionally ignored and this mindset may have affected the result. If this option is the one to be applied, all 3 of the tied players (especially Perdunk) should be ok with it. I'd rather not choose this option because it would require to re-evaluate all the other ties of the group stage and check that considering drawn rounds doesn't change the result for anybody else
2) All 3 players (Leoric, Perdunok and Diego) play a bo1, or a new bo3 game, against the other two tied players. A new set of bo3 games may result in another 3-way tie, so I'd rather choose a bo1. Since in the previous games no caves were played, I'd suggest playing cave if a single round, and playing cave-cave-open or cave-cave-cave if bo3; but it's up to the two players involved in a game to decide what they will do. I'd prefer if you guys played just one cave round against each other to break the tie, but if all 3 of you agree to something different then that should be fine as long as it is reasonable.
Edit: during this tie-break, tied rounds will be considered. Points for each game will be awarded according to the formula:
(won ronds + 0.5*tied rounds) / total rounds. If the single-round option is chosen and it results in a tie, an extra round will be played until someone wins one round.