I watched the whole game and Watford not getting anything seems harsh, imo.
Memphis having two very close misses, Schneiderlin just over the bar, Smalling's effort near the end, are just some of the efforts Utd should have scored with
The ONLY time Watford troubled De Gea was with the penalty (even adding Smalling's header in thee 2nd half, where if CS hadn't touched it De Gea would have made it look simple) - sorry but no they didn't deserver it without being gifted the point by Utd being lazy - which Ive already said