The London 2012 will be all about some of the biggest rivalries in sports, and MSN Sports is here to point out the fiercest ones for you to keep an eye on.

Lee Chong Wei vs. Lin Dan(Badminton)

When have these two ever met, and there hath not been fireworks later? Lee Chong Wei, recently demoted to World No. 2, is facing his last chance at Olympic glory. He hasn't been in the best of shapes lately, but will certainly look to prove critics, and his ageing body, wrong. Lin Dan on the other hand, as fit as ever, has been flying under the radar lately, keeping mum on his Olympic dreams. But in all certainty, you can expect the two to make for some fierce shuttling once the Games begin.

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