This video is from a different angle and shows Jewett's right foot contacted Rotich's left leg apparently throwing him off so he tripped.
What is interesting is that going into that turn Rotich was on the rail and Jewett was outside of him in lane 1. Jewett got ahead of him and moved to the rail right before he tripped.https://www.youtube.com/watch?v=1Bqpg2eStSE
Focus on Jewett running up on Tuka, that is what starts the whole chain of events, watch Jewish right knee hit Tukas back foot, it causes Jewett to stall, which causes Amos to step on him and they both go down to the track.
Listen, I'm rooting for Jewett, but Amos deserves to be advanced for sure, it was the Olympics want to be generous, due to the sportsmanship, they can advance Jewett as well...
I mean I want Murphy to win, I wanted. Young Jewett in the final, and Amos is an old fave, so it was heartbreaking to watch, but I also thinkHoppel should have been advanced to the final cuz he was impeded with about 200 ago...
I could be okay with both of them being advanced Amos and Jewett .