Woods expects to return in two weeks

(CNN) -- World number one Tiger Woods has said his recovery from left knee surgery is going well and he hopes to play in the Memorial tournament in two weeks' time as well as the U.S. Open.

Woods said he has not progressed beyond chipping and putting but plans to do so soon. "The rehab is going well. I've been training hard," Woods said. "I'm getting sick and tired of riding the bike, though. That gets old fast.

"I'm chipping and putting. I'm not doing anything beyond that. Hopefully I'll start hitting balls, start progressing soon and work my way up the bag," he added.

His target is to return to the U.S. Tour by May 29, the opening round of the Memorial event hosted by Jack Nicklaus at Dublin, Ohio, and be ready for the second major tournament of the year, the U.S. Open on June 12-15 at Torrey Pines.

Woods has won 13 major titles, five short of matching Nicklaus for the all-time career record. He has already won six times at Torrey Pines, including an eight-stroke triumph in his debut this year to start a run of four 2008 victories in a row.

Woods, who has undergone three operations on the knee, has made swing shifts over the years to try and ease stress upon his legs.

"That's one of the reasons why I've made changes in my swing over the years, to alleviate the stress I put on my legs," Woods said. "It has gotten better and hopefully it will continue to get better."

Woods expects a more difficult layout than PGA events at Torrey Pines when he sees the San Diego course next month. "I'm sure (the fairways) are probably narrower. The rough will certainly be deeper and the greens will be dried out and baked out that time of year," Woods said.

"I'm really looking forward to it, looking forward to getting back there and playing. I haven't played in those conditions, dry and fast, since probably the Junior World days -- but it was nowhere near as difficult as it will be during the U.S. Open."