While praising victorious opponent Lucas Pouille, 19th seed Bernard Tomic was disappointed in himself after failing to make the most of his "big opportunity" at Wimbledon.
With a second grand slam quarter-final berth in his grasp, Tomic let it slip as he lost a thrilling five-setter to French bolter Pouille 6-4 4-6 3-6 6-4 10-8 on Monday.
Tomic, whose maiden quarter-final appearance was at Wimbledon in 2011, led 4-2 in the fifth set before 32nd seed Pouille - a player never to have advanced beyond the second round of a grand slam prior to SW19 this year - rallied in a topsy-turvy end to the match, which the unheralded Frenchman served out after almost three hours.
And Australian 23-year-old Tomic was left to lament what could have been, with Pouille now set to face either 10th seed Tomas Berdych or Jiri Vesely in the last eight.
"It was a chance for me possibly to maybe make a semi here at Wimbledon," Tomic told reporters afterwards.
"I think it was to play quarter-finals against Berdych or Vesely. I felt whoever won the match against us has a chance to play for a semi-final in a grand slam. It's a mistake that I made.
"I played so many times in my career fourth rounds, third rounds in grand slams, and only been to the quarters once. I felt like this was a big opportunity for me. I managed to play a player that was doing the right thing and playing the right way to win today."
Tomic added: "That was amazing match to be a part of. A lot of emotions. He was playing the match of his life.
"Very important match for him to make a quarter-final of a slam and for me maybe potentially my second time to make a quarter-final of a slam.
"It was a tough moment, and I think it was great to be a part of that match. But I felt like I should have won, had the match on my racquet and he just kept playing freely and going for his shots. He did the right things to win the match. Full credit to him."