Sergei does make a good case for edging on the thin line of a top 10 place that Roger and Mir both currently also walk along, very soon the picture will become very clear, if we can't separate after Barnett vs Rogers fight, we sure as hell will be able to separate after the winner of that fight faces Sergei.
But I but him on the list anyway as another possible No.10 at the moment since there is so very little in it between some positions, like you say he matched Rogers victory over AA, and has a very solid record, lets not forget that beating Overeem at the time he beat Overeem was not as creditable as gaining a win over him now he was a completely different fighter back then, so that does not jump him as much as it may seem in current rankings holding past wins over the Reem and Werdum, and only fighting once in both 2008 and 2009 against low ranked opponents and losing to one of them did not do his ranking any favors and is yet to face a certain top level fighter since then with AA's record been so much in question in just how much he has fell since beating Roy Nelson only 2 years ago.
Fedor losing actually made me more interested in the tournament, was a nice surprise
Same here, as much as I wanted to see Fedor vs Reem, I am now a lot more interested in Bigfoot vs Reem, Bigfoot has really opened to doors now to step into the star light.
Not only am I interested in this tournament as much as ever, there are fights I want to see after possible elimination scenarios, like now for example I would love to see Arlovski va Griggs, and if Bigfoot should lose to say the Reem (without meaning to write Werdum off but I only give him a 10/90 split chance) in the semi finals I would still love to see him fighter Rogers, Barnett and Sergei at some point in the future, there are tons of good follow up fights for SF to run after this tourney.