A penalty from Adam Armstrong, from Joe Rafferty's foul and sending off, and further goals from Ben Brereton and Tyrhys Dolan saw Rovers to three points at a canter.
Here's how the players fared on the night...
5. Joe Rafferty - 5
Wasn't having a bad game but let himself down getting sent off just before the break. Lost his man and waited too long to commit a foul, left his side with it all to do.
6. Ryan Ledson - 5
Was second best in the midfield all night, barely got within five yards of the opposite numbers of Rovers. A shadow of his usual self that we've seen this season.
7. Alan Browne - 5
Like Ledson, he was second best in the midfield all night. He tried to put himself about and get stuck in but was always chasing shadows. Misses Watford with a fifth yellow.
8. Tom Barkhuizen - 5
Did try to make things happen and was one of few to actually get a shot off, but was largely sacrificed after the red card. Spent the second half at left back.