Most of those should stay intact this week. Yoshi's Island is probably the only undefeated game with a serious chance of losing this week. Maybe AC2 against Diablo 2, it losing that match wouldn't surprise me. I'll be interested to see what Galaxy 2 does against FFVI this week. I expect it to win, but I wonder how close it will be.
Ace Combat 5 and Puzzle Fighter face each other this week, so one of them will get a win! Most of the others don't have a great chance of winning.
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