Andrew Flintoff insists he will be fit for the remaining three Ashes Tests after inspiring England to a 115-run win over Australia and a 1-0 lead.
The all-rounder, who will retire from Tests at the end of this series because of an ongoing knee injury, took 5-92 in his final Lord's Test on Monday.
Despite playing with pain in his right knee, Flintoff, 31, said: "It was never my intention to bow out at Lord's.
"I want to be in an Ashes winning team come the last Test at The Oval."
Flintoff, who bowled unchanged for 10 overs from the Pavilion End, removed Brad Haddin with his fourth delivery of the morning to set England on the way to taking the five Australian wickets they needed to go gain the advantage in the best-of-five series.
The England medical staff now have only nine days to patch up the Lancastrian before the third Test begins at Edgbaston on 30 July.
Team director Andy Flower insisted Flintoff will not be picked if he is not going be fit for a full five days.
"He's got to be able to guarantee he can last a full game," stated Flower. "We'll get medical advice to see if that is a probability."
England have a couple of other injury worries, with Kevin Pietersen and Graham Onions suffering from Achilles tendon and elbow problems respectively.
Captain Andrew Strauss added: "The Achilles was hurting KP so the medical staff are going to see how he reacts to a few days' rest and recuperation. It's going to be feet up in front of a TV screen for him more than anything and then we'll have to play it by ear.
"The important thing is that we have to be certain the 11 we choose for the Edgbaston Test are going to get through the game and that's what the medical staff are going to have to guide us on."
On Pietersen's injury Flower added: "He's been struggling quite badly with that Achilles injury for quite a long time now.
Broad is the worry for me - he doesn't look like he's going to bowl anyone out
Former England batsman Geoffrey Boycott
"He's going to be re-assessed later this week and then the experts will make a decision on whether he's ok or not."
If Onions is not fit, his Durham team-mate Steve Harmison could come into the reckoning after taking 6-20 in 13 overs to help his county to an innings victory over Nottinghamshire last week.
Former England batsman Geoffrey Boycott says the form of fellow paceman Stuart Broad may also open a door for Harmison.
"Broad is the worry for me," Boycott told BBC Sport.
"He doesn't look like he's going to bowl anyone out. After the improvement we saw in the West Indies he seems to have gone forward one step and back two.
"I've been watching him carefully, the ball isn't moving and if the ball isn't moving at Test match level then you had better be quick and aggressive like Flintoff and get up the batsman's nose.
"I don't see Stuart as that type of bowler. So he'd be the one whose position I'd be thinking of rubbing out.
"There's people waiting in the wings like Harmison."
Harmison dismissed Michael Kasprowicz four years ago at Edgbaston to clinch an extraordinary two-run victory for England against Australia to help set up a 2-1 series win.
That series endured as many twists and turns as the current one and Flintoff, who played a huge part in the 2005 triumph, has reminded his team-mates not to become complacent after England's first victory over Australia at Lord's in 75 years.
Flintoff, who was named man of the match after picking up his third five-wicket haul in his 77th Test, said: "The worst thing now is to sit back and dine out on this.
"We know Australia and they keep coming back and back at you, they have got so many special players in their dressing room so if we think for even one second that our job is done we'll get found out."
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