Brian McDermott hailed Reading's 2-1 victory at Watford as a "big three points" after Adam Le Fondre came off the bench to score a late winner and ensure his side bounced back from last week's FA Cup exit at home to Stevenage.
Seven of the previous 11 meetings between the two sides had ended in draws and that sequence looked like extending to eight in 12 until a late Royals corner was flicked on and the substitute pulled off his man at the back post to hook the ball past Scott Loach.
"It's a big three points," McDermott said. "It's never easy to come here and win and that's been proven with their record at this ground, so we have to be pleased with that."
Asked if it was an inspired substitution, McDermott replied: "He can score, that's the thing with Adam Le Fondre and looking back at the goal it was a fantastic, instinctive finish and to put it in the top corner the way he did was top drawer.
"He's come off the bench today off the back of Churchy (Simon Church) coming off. Churchy has run his socks off and did a really good job for the team and Adam came on and scored the winner, so that's what having a good group of people and players around you is about."
Earlier, Jimmy Kebe had headed in a Hal Robson-Kanu cross to get the visitors back on terms before the interval after Shaun Cummings had diverted a Troy Deeney cross past his own goalkeeper.
This was Watford's first defeat at Vicarage Road in nine matches and boss Sean Dyche said: "I didn't think our performance level was good enough for us this evening.
"We've performed very well of late but there were too many individual performances that weren't quite right. You can carry maybe one or two but if it goes to three and four then that affects the team and all of a sudden the team looked a bit disjointed.
"The second half was a bit more even, the first half they were the better side I felt, so eventually you get caught out if your performance levels are not high enough, albeit from a couple of soft goals, particularly the second one."
Dyche added: But it's a really valuable learning curve the players are on and some of the players are learning from the ups and downs of it. We're on a nice run in general, particularly at home, so we're not too despondent but with the performance we're feeling a bit disappointed."