Unfortunately, I can't see Djok withdrawing, certainly not now the draw has been made, which would really screw things up. If he gets that far, he has Zverev in the semis, meaning Jannik vs Carlos in the other.
Andy, if he plays, has Machac.
Dan has Tabilo.
I think Draper vs Norrie in the 2nd round, if they both get through.
Dart vs Boulter in 2nd round (they seem to play each other a lot and it's always tetchy!) but Katie has to beat Tatjana Maria first, which might not be easy.
I think Jannik might play Matteo in the second round.