Mark Noble's early penalty and Sebastien Haller's first two goals for the Hammers secured a thrilling win at Vicarage Road in a thoroughly entertaining match filled with chances for both sides.
“It was a really entertaining game," Pellegrini said. “Both teams played in an attacking way and tried always to score. It was an open game. I spoke with the players before the game and said it would be open. If Watford do what they normally do, then they will always play with six attacking players.
“Both teams, especially in the first 25 minutes, were very open in both boxes. I think the impact of Antonio in the second half made the difference.
“I always say, as a manager, the most important thing is to win. There are different ways to do that. I think maybe Watford fans will not be so happy, but both sets of fans came here and saw a good show, a good game of football for everyone, and those are the sort of games that bring more people to the stadiums."