Mookie Betts has been so great at so many things to this point in his young career that it's worth remembering he's not actually a fully formed player just yet. Playing defense in the outfield is still new to him, and while he has the skills and the athleticism to make it work in the long run, there are moments where it's clear he's still a work in progress.
The good news is that sometimes, even during those times where he's clearly still learning, he's capable of making plays happen.
Betts ended a Braves' rally even though he misread the fly ball off the bat and took a few too many steps backwards. He recovered quick enough, with his speed, to get into position to make a diving grab, and most importantly, held on to the ball even as his glove hit the ground.
It absolutely wasn't Mookie at his best, but hey, it worked. If he's still making mistakes like that when he has years rather than months of experience in the outfield, we can get upset.