London: Usain Bolt admitted he will have little chance of winning another world championship title unless he sorts out his lethargic start after storming to victory at the London Diamond League on Friday.
The Jamaican star also insisted "there was still room for improvement" despite returning to somewhere near his explosive best when winning the 100m at the Olympic Stadium.
The fastest man on the planet, and athletics` greatest entertainer, gave his rivals a decent start before he produced a show-stopping performance as he dashed to victory in 9.85sec, a season`s best.
It is not the first time that the Olympic champion and world record holder has been tardy out of the traps and not the first time he has managed to show the speed and power to burst through the field and take the tape in front.
Bolt returned to the scene of his heroics in London 2012 and the 60,000 Olympic Stadium crowd roared him on as he beat off America`s Michael Rodgers (9.98) and compatriot Nesta Carter (9.99).
Afterwards he did a lap of honour in front of a frenzied crowd, knelt down to kiss the track in his tradition style and then threw his spikes to a lucky punter before shooting off into the night.
But Bolt admits he needs to put things right quickly before taking his place in the world championships in Moscow next month.
"If I start like that in the world championships I will probably finish fifth. I need to work with my coach and figure out how to be more explosive out of the blocks and not so slow," said Bolt.
"I`m not back in the Test side yet but I`m pleased to be a step closer to it and I`ve always dealt with situations like this by concentrating on the game in hand and refusing to look too far ahead."
Pietersen, in an indication of the treatment work he has undertaken in a bid to regain full fitness, told his Twitter followers: "Might try getting in the car this am and when turning on the ignition, say the words, "gym for rehab.." Surely it will drive me there.."
Pietersen`s 2013 has been beset by injuries, with a knee problem forcing him home early from the tour of New Zealand in March and then ruling him out of the return series against the Kiwis and the subsequent Champions Trophy tournament.
He made 64 in the second innings of the first Test but suffered two failures at Lord`s.
As well as Taylor, England`s selectors will be keeping a close eye on Sussex left-armer Monty Panesar as they consider whether to play a second spinner alongside Graeme Swann on an Old Trafford pitch which, while it last staged a Test in 2009, remains renowned for taking turn.