Andy Murray revealed he had to curb his attacking instinct to turn around his first-round match against Daniel Gimeno-Traver at Wimbledon.
The British number one lost the first set but recovered to tie up the following three in only 85 minutes.
"I changed the way I was playing and the way I was returning especially," he said after his 4-6 6-3 6-0 6-0 win.
"When I blocked more of his first serves and made the ball shoot through the court more, he made more mistakes."
Before Murray's change of tactics, the prospect of an upset had been growing as Gimeno-Traver secured the first set before facing down two break points in the second.
The Spaniard's challenge folded spectacularly, however, and, despite the world number 59's call for the trainer to work on a knee complaint, Murray believes his own more conservative tactics played a part in the outcome of the match.
"The court was quite slow as it is normally in the first week," he added.
"I was playing a lot of long rallies with him and playing very aggressive off his first serve.
"I was missing returns off the first serve and giving him the chance to dictate a lot of the points.
"I couldn't quite get the break but when I did I played much better, though I had to make some adjustments."
Having taken advantage of the Centre Court roof to become one of the players to book their place in the second round on a rain-affected first day, the Scot will have at least a day to recover from his match.
Murray also suggested that the loss of his first set in the tournament may have been a useful exercise in mental strength, even if it extended his physical exertions.
"It was tough because I was having quite a lot of chances and wasn't able to convert them in the first set," he reflected.
"I did manage to get myself fired up when I got the break and didn't lose a game from 3-3 [in the second set].
"I did a good job on that and it is something that I need to keep improving on in each match because it is going to get tougher and I am going to go through a lot more of those situations in the tournament."
The 24-year-old admitted he had managed to stay up watching golfer Rory McIlroy's emphatic US Open victory on Sunday until the Northern Irishman was three holes from home.
McIlroy's first major came only two months after he threw away a four-shot lead in the final round of the Masters.
But Murray was unsure if McIlroy's win had any lessons for him as he attempts to improve on two successive semi-final appearances at SW19.
"I think the way he responded to the defeat that he had earlier in the year was excellent," stated Murray.
"It is different, they are very different sports in many ways.
"In golf you are always in control and in tennis, like today for the first set and a half, I wasn't in control of what was going on out there!"