Manchester United manager Sir Alex Ferguson felt his side should have clinched the Community Shield without needing penalties to beat Portsmouth.
United were on top throughout the match but their failure to score meant they needed a shoot-out, which they won 3-1.
Ferguson said: "We dominated possession and had some good chances but it is this issue with scoring at the moment.
"But, if you are making chances as numerous as we were in this game, we should not worry about it."
Sunday's victory was the seventh time Ferguson has been successful in the curtain-raiser to the Premier League season.
United's win should have been far more comfortable than it was but a combination of poor finishing and some excellent saves by Pompey keeper David James meant the 90 minutes finished goalless.
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"I think everyone thought it was a penalty," added Ferguson. "I don't know what position the referee Peter Walton was in.
"Anyway, it wasn't given and it doesn't matter."
Tevez grabbed Hreidarsson's neck in the aftermath of the incident but his actions were not seen by Walton or Ferguson.
Ferguson felt his side were given a decent work-out by Portsmouth and was also pleased to see stalwart defender Gary Neville make his first start since March 2007.
Neville, who has been recovering from a broken ankle, played 66 minutes at Wembley.
"I was very pleased with our performance - it was excellent," Ferguson said.
"I think we gave Gary the right number of minutes. That was perfect for him.
"When you think he has been out that length of time and come back the way he has, it's remarkable."
Pompey manager Harry Redknapp missed the post-match press conference as he is struggling with a virus.
But his assistant Joe Jordan was left frustrated after seeing his side fail to score with three out of their four penalties.
"The shoot-out wasn't particularly good for us but we got an 0-0 after 90 minutes. We did very well - it was encouraging"
Portsmouth goalkeeper David James, however, felt his side could take heart from holding United despite their eventual defeat.
James told BBC Radio 5 Live: "The shoot-out wasn't particularly good for us but we got a 0-0 after 90 minutes. We did very well - it was encouraging.
"I'm not sure how many saves Edwin van der Sar had to make but let's remember that they are the best side in Europe."
The veteran England goalkeeper feels his side are still in good shape for the season and is sure new £11m striker signing Peter Crouch will have more joy in the future.
"I thought Rio Ferdinand was outstanding against Peter," James added.
"He didn't completely dominate him - Crouchie did some very good stuff aerially - but United are a notoriously difficult side to beat and they showed that."