"I thought it was going to be slightly left to right at the end and it kind of went straight and basically just left it hanging," Colsaerts said.
"Too bad. I thought it was a pretty good effort, especially with these dark clouds."
Colsearts tapped in for 60 and the first-round lead at the Portugal Masters. It was the 19th round of 60 in European Tour history. No one has shot a 59, although Colsaerts was determined to break through and nearly did.
"I said to my caddie after I hit a good drive [at 17], 'It's 59 or nothing.'"
Carding four birdies on the opening nine, Colsaerts was out in 31. He then made three consecutive birdies to get to 7 under through 12 holes. The long-hitting European eagled the 315-yard par-4 15th hole. That's when a record came into focus.
"When I made eagle on 15, I knew then that if I birdied the last three, that would have been 59."
Colsaerts parred 16 but then made another eagle at the par-5 17th hole. After his final putt hung on the lip, he signed for a 60, which included a 29 on the inward nine.
The second round has been suspended due to a waterlogged golf course. Despite being 2 under through his first nine holes and 13 under for the tournament, Colsaerts currently trails Alexander Levy by a shot.