Jenny just ran 2:00.79. She has a shot at the AR in the Pre. I expect, as we have seen from her recently, a front running performance that leaves the rest of the Americans in the dust. She' s got the speed now and no reason not to put the hammer down to get one major accomplishment that's missing from her resume. She might tow Rowbury to sub-4 also, but there's nothing to indicate that Shannon can compete with her this year.
If Alexa is savvy enough to survive the pace we could see a new AJR. But her record so far is to take on the leaders at suicidal mid-race pace. Great heart, but I don't think she's got the base or speed yet to compete with Jenny. If she shoots for sub-4 she won't take down Cain's AJR.
I believe the women's 1500m record is our oldest major track running AR on the books. (There is Wohlhuter's 1k record, a minor event not often competed outdoors). Also, it's a rarity when an AR is set on American soil.
I would love to see Jenny challenge the AR and smoke people, but I am not getting my hopes up just because she ran 2:00.79. Two years ago she ran 2:00.45 at the same meet in winning fashion.