Chinese swimmer faces doping suspicions

>>> more drama in the pool to tell you about, something making news tonight. any time you have a woman swim faster than a man and beat her own personal best by five seconds, questions are sure to follow the competition. that's exactly what happened here today. the story tonight from nbc's chris jansing .

>> reporter: for much of the women's 400-meter individual medley on saturday, american elizabeth fisel was in the lead but the chinese teenager ye shiwen was so fast she not only won the gold but posted a better time in the final 50 meters than even ryan lochte in his gold medal swim in the same event. a veteran coach called the results disturbing and unbelievable.

>> we've never seen any swim that has ever been that far outside the range of previous swims that has not proven later on to have been tainted in some way.

>> reporter: ye denied doping allegations. all medalists are tested and results turned around in 24 hours . a doping official said today there shouldn't be a rush to judgme judgment.

>> i don't have any reason personally to know what happened until i have further information.

>> reporter: that wasn't the only controversy today. olympic organizers responded to continuing complaints about empty v.i.p. seats.

>> when we can, we're going to release those the night before and put them up for sale. 3,000 went up for sale tonight.

>> reporter: but scores of seats went unfilled. in women's gymnastics, jordan weaver's coach splacomplained about her surprising elimination from the all around competition last night. he called the rule that only allowed two gymnasts from each country in the finalists ridiculous saying it penalizes teams deep with talent. ali resin will go for the gold. the world got a humorous glimpse of the excruciating tension her parents feel. lynn and ricky seemed to do the routine along with her.

>> i didn't know i was moving that much at all.

>> reporter: there are no formal moves here. you two have not trained.

>> no. i didn't really realize we were in sync either.

>> reporter: and another athlete's family got a lot of attention today. larah phillips finished out of medal contention but royal relatives william, kate, harry, beatrice, eugenie and camilla all cheered her on. and if you're wonding why we haven't seen the queen at any events the past couple days, after her star turn at the opening ceremony she went off to that little getaway house.

>> so eventful. we're just getting started in london. chris jansing with all of it tonight.