Robin van Persie said Manchester United were favourites for the Premier League title after his two goals beat Wigan 2-0 to win the Community Shield.
Van Persie struck with a header and a deflected shot as the champions secured the first silverware of the David Moyes era – and the Dutchman said he believed there was more to come.
"We're doing really well, and I believe in this team," he told ITV1. "We are the champions and, based on that, we are clear favourites. I believe that we will compete until the end again."
United have endured a mixed pre-season as well as having to cope with ongoing speculation about the future of Wayne Rooney.
But Van Persie helped put those concerns in the background and added: "It's always nice to score, especially at Wembley.
"It's a great day for the fans, for us and for the manager as well. All of us. One day, one game and we've won a trophy, so it's good. I'm really glad for everyone."
Ryan Giggs hailed his team-mate's goalscoring performance and said United had been "professional".
"The first goal's a brilliant goal. The timing was brilliant, and it was a great start for us," he said. "We hope Robin can produce the form that he showed last year."
United struggled for defensive solidity during their pre-season campaign but were rarely threatened by their Championship opponents at Wembley, and Giggs said: "It was a very professional performance.
"We were a bit disappointed pre-season, letting a few goals in, so the main objective was to get a clean sheet. We wanted to do that as a team. Work hard, get behind the ball, and I think we did that."