When you're floating above Eggm in your second DL match vs his fox, you should use that opportunity to pseudo-tech chase with the fair. I find that waiting just a second for them to get up or roll and then fc-fairing straight down usually catches people because, if you start out right above someone and they stand up, they get hit by the fair's lower hit box, if they roll behind you, the may get hit by its back hit box, and obviously if they roll in front of you, they'll probably get hit by the forward hit box. Now, if for some reason, you completely whiff, depending on where they rolled/teched to you have different options.
In front- You can try to follow up, slap, dash attack, fc-nair, or just run away.
Behind - I'd just run away or shield because I'm uncomfortable with fox behind me, but I guess you can fc-bair him
If he managed to tech right underneath you, you're kind of screwed unless you down-smash really fast or something. The point is, though, the fair should prevent him from getting here in the first place.
I think at 1:35, it would have worked out pretty well.