If they get Zeballos or Ascione, then they are favourites to win their match. But if they get Malisse or Kohlschreiber, then they will lose their 1st round match.
There is a French article about the qualifiers:
I don´t understand French at all, but could it be that Sijsling got Ascione, Fabbiano got Kohli, Zverev got Zeballos, ERV got Malisse?
Would be good for the two Germans.