The world number one finished four shots off the pace at Augusta, but revealed that the greens played differently each day on the famous course.
"It's one of those things where this golf course was playing a little bit tricky today," Woods said. "We had four different green speeds out there and I couldn't believe how slow they were the first two days.
"Yesterday, I couldn't believe how fast they were. And then today, it was another different speed again.
"I had a hard time getting accustomed to the speed of the greens today. I struggled hitting putts hard enough."