( CNN ) -- Tiger Woods believes he has fixed the swing problems that led to his disastrous Masters showing last month , although he accepts that a chronic left knee problem will always compromise his efforts to improve . The former world No . 1 is getting ready for his first tournament since he finished way down the field in 40th at Augusta , his worst result as a pro at the tournament he has won four times . He had started the tournament as many people 's favorite after winning the Arnold Palmer Invitational in the lead-up , but a string of wayward tee shots led to him failing to break par in any of the four rounds . `` At the Masters , I was kind of struggling with my ball-striking a little bit , '' Woods said during a question-and-answer session with his fans that was posted on his personal website . `` Sean ( Foley , Woods ' swing coach ) and I fixed it . It had to do with my posture . My setup was n't quite right as well as my takeaway , so we worked on that . `` I 'm getting dialed in . '' Woods will compete in the Wells Fargo Championship at Quail Hollow beginning Thursday . He won the PGA Tour event in 2007 , although he missed the cut in his last appearance in 2010 . `` I feel like if I can do the things that we 've been working on , and get my posture and my takeaway dialed in , then yes , I have a good chance , '' said Woods , who will then play at the Players Championship at Sawgrass the following week . But the 36-year-old American said the left knee injury that has already needed surgery four times will be an issue for the rest of his career . `` I 've trashed it pretty good over the years and we 're working on things to alleviate the amount of stress ( as much as ) we possibly can on the knee so I can play for however long I want to play for , '' he said . `` And that 's one of the reasons I 've changed my swing over the years , to try and alleviate that stress . I 've had four surgeries on the knee so let 's just end it at four and have a nice happy , healthy life . '' The video question and answer session was a first for Woods , who has opted not to carry out a news conference before the Wells Fargo tournament . Woods has appeared increasingly keen to engage his fans in recent years , and especially since the scandal about his personal life erupted in 2009 . He answered 19 questions sent in via Facebook and Twitter in a 15-minute video . Woods said his favorite trophy was the claret jug awarded to the winner of the British Open , which he has lifted three times . His most memorable putt was the one he holed from four foot to par the 18th and win the 1997 Masters by 12 strokes . `` To set the record , all the history it meant at the time , to have my dad there at the back of the green , '' Woods said . `` By far it was the biggest . '' Having taken a week off from golf completely after the Masters , Woods said he was excited about returning to action at Quail Hollow where Rory McIlroy and Phil Mickelson will be among his rivals . Masters winner Bubba Watson and world No . 1 Luke Donald are skipping the tournament . `` I did n't touch a club for a week and then the last couple of weeks I 've got back into it gradually and started ramping up my practice schedule , my practice time , '' Woods said . `` I feel very excited about playing , and all the things that Sean and I have been working on , I just need to implement . ''
Tiger Woods says he has worked hard on his swing with coach Sean Foley . The former world No . 1 finished 40th at the Masters , his worst finish there as a pro . Woods will return at the Wells Fargo Championship beginning Thursday .