My thoughts wrote:
I agree that Feldman has a great kick, but let's remember she lost the 1500 at Heps by more than three second to Abbey D'Agostino because she couldn't catch her. If the race is very tactical, she has a decent shot, but there is likely to be a big move made 600+ out and she doesn't have the strength to hang with the likes of Hasay or Flood or infeld from there.
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Remember that at Heps she ran the final of the 800m one hour later (which she won). She won't be doing that at Nationals.