Boris Berian's spontaneous 1:46 at some random indoor trwck meet in Portland shortly before he won WC Gold.
For me was probably Rupp vs Daba indoor 5k in Fayetteville. The ran like 13:17 and 13:18 and Rupp set indoor AR. Was really cool cause I was so close to the track ..
I think chelanga was 3rd like 15secs back
My second is Shawn Forrest vs Rupp at 10k in fayville. Forrest put a hard surge on with some laps to go .. crowd got jacked. Rupp held on and won handily in the end. Was a great race