I have to agree with Armstringlivs; whilst Mu is showing great potential, to talk about the likelihood of her breaking the 800m WR is nonsense at the moment. Let her settle into her senior years and run consistently in the 1:55-1:57 region first. She's only broken 2 mins twice for goodness sake! Let us also see her run against the international big girls too. Throw in experienced tacticians capable of running well under 2 mins, and her race will not be the same as competing against college girls who are running way outside 2 mins.