If im Machado, I don't play today. I have watch the replay a bunch of times and you can see alfarrao move inside and his glove starts up before the pitch. So they were at least going in high and if he misses his spot, like he did, he hits Harper. If Machado plays he is getting hit
I am not sure what you are watching...
The ball is halfway there and he is absolutely not moving up and in.
It sucks it happened, but it wasn't intentional.