Jingy: races a lot; and makes every race exciting
Lobalu: his story is touching, his win in Stockholm over Kiplimo a great underdog moment; and Switzerland has finally someone that can hang with the best on the track
Hassan: challenges herself in unusual ways instead of just going for the same thing over and over again
Cheptegei: his world records were the first ones I witnessed live (I'm not following track and field for a long time); though I didn't like how he ducked out of the 5000 in Paris
Tadesse Abraham: very inspiring to see someone improving their PB in their 40s (2:06mid -> 2:05:10 -> 2:05:01 -> going for 2:04:XX in Valencia); and he beat Bekele in Paris
Clayton Young: liked his Youtube series about the Paris build; hope he can get out of Mantz' shadow
Stewy McSwein: always going for it; though it becomes a bit frustrating to never see it pay off