Andy Murray is through to the third round of Wimbledon after beating Ivo Karlovic in four sets.
The British number one dropped the second set, but came back to win 7-5 6-7 6-2 7-6 in over three hours.
Murray was broken in his first service game, but he responded straight away to level the match and went on to win the first set 7-5.
Karlovic hit back in the second set, winning the tie-break 7-5.
The momentum immediately swung back in the Scot's favour as he secured a break in the first game of the third set, before taking the set 6-2.
Murray won the fourth set on a tie-break 7-4 to wrap up victory.
He said: "Winning is all that's really important when you're playing a guy with his game. It's so challenging to get into a rhythm. I did well at the beginning of the third set to get the break.
"With someone like him it's a bit of a lottery but you hope he makes a mistake. He served a double fault in the tie-break and that was the difference. I felt I returned well today. I didn't get aced too many times."
Murray has reached the semi-finals at the All England Club the last three years and is aiming to become the first British man since Fred Perry in 1936 to win the tournament.
He faces Marcos Baghdatis in the third round on Saturday.