Lots of good info on Yuki’s running up to Boston, but I particularly like that at one of the university time trials he ran in 3 heats of the 5000m, going 1st (14:53), 2nd (14:36), And 8th (14:37). Seems like a good way to practice the surges he used so well!
http://www.nerunner.com/2018/04/02/what-boston-bound-yuki-kawauchi-has-been-up-to/