England limited-overs coach Ashley Giles believes Kevin Pietersen is fit and ready to lock horns with Australia in the Ashes series.
Pietersen, who made an unbeaten 177 for Surrey against Yorkshire last weekend, was due to make his return to England duty after three months out with a knee injury in the second Twenty20 international against New Zealand at The Oval.
However the match was rained off after just two balls were bowled, meaning England lost the series 1-0.
"Kevin is really good," Giles said. "From experience, when you are injured it can drag you down and affect you physically and mentally but he seems very happy with how his body is.
"There are no problems there so he is upbeat and looking forward to the rest of the summer.
"It's good to see him like that because a happy Kevin Pietersen is going to be a dangerous Kevin Pietersen.
"He's showed his class in that county game he played, getting 150.
"He would have got some valuable time in the middle but from a coach's point of view it is good to have him around again.
"He's an experienced player, high quality and good for the group - especially a young group."
England, who lost Tuesday's opener to New Zealand by five runs, had already seen Michael Lumb dismissed when the rain arrived.
"It's disappointing to lose the series," Giles added. "That's what it goes down as - 1-0 - and that's the way it is.
"We were looking forward to tonight and the atmosphere here at the Oval was fantastic.
"The weather was great on Tuesday and while the result didn't go our way it was the way T20 cricket should be played and should be viewed.
"It was a great atmosphere and totally different tonight. The weather has come in and spoilt it."