The 25-year-old Englishman looked set to have a promising career when in 2008, while still an amateur, he finish tied for fifth place behind Padraig Harrington in The Open at Royal Birkdale.
Since then his progress has been hampered by a series of back complaints caused by the wide swing arc his 6 foot 5 inch tall frame creates.
In 2012 he did record his first professional victory in the 2012 Thailand Open on the Asian Tour but then the injury returned.
"Two or three weeks after I won. I had to withdraw from a couple of events as my back went," he said after reaching 15 under par on Friday.
"All of a sudden from going on a bit of a high after winning a tournament I had to pick myself up and start again.
"The confidence seemed to be shortlived then but I hope fully I can look back on that win and it will help me in the final round."
Wood was two shots off the lead at the start of the day but worked his way to the top of leaderboard with five birdies in his first eight holes and an eagle at the par five tenth in a round of 64.
For most of the third round his nearest challenger was Spain's Sergio Garcia but he dropped back four shots off the pace after finishing his 70 with a bogey after finding water by the 18th green.
In a three way tie for second place are New Zealander Michael Campbell, another Englishman Simon Khan and Sweden's Alexander Noren.
Khan began five shots off the lead but sunk six birdies in his first seven holes on his way to a round of 64.
He followed up with two more on the closing nine but felt he could have done even better.
"I was leading after eight holes," he said.
"But then I did the classic. I got a little bit ahead of myself and started thinking ahead.
"It would have been nice to have finished a little better but I was delighted with the front nine."
- Sports & Recreation
- Padraig Harrington