Just my two cents...McNally and White are the top two contenders in the boys race if the event was held during outdoor. However, neither athlete has really raced much yet. Guys like Smith, Andrews and Merber are the tri-favorites since they have all run very well, won some big races, and are race ready.
In the girls race I would say it will either be Jillian Smith or Hannah Davidson. Kristin Reese won a big meet a few weeks ago, but is really inconsistent. Smith won the Reebok Boston Indoor meet last weekend in 4:48, which is the top time in the country right now.
MileSplit (www.milesplit.us) is supposed to have a good preview available later today.