& # 039; I & # 039; will be in last place, & # 039; says Duval after round that includes a 14

David Duval's opening round was later changed to 20 over The 148th Open Championship, Royal PortrushDates: 18-21 JulyCoverage: Live text updates and in-play clips on the BBC Sport website, with live commentary on BBC Radio 5 live and daily highlights on BBC Two Open leaderboard

Former champion David Duval said he had resigned last at The Open at Royal Portrush after placing a 20-over-par 91 – the worst round of the tournament in 22 years.

His disastrous round included a 14 in the par-five seventh where he made a penalty of two penalty points for hitting the wrong ball before producing a triple bogey on the 17th.

"I thought this week if things were to happen I could make the top 20," he said.

"Of course I am in last place."

He added: "I have just done something that I have never done as a professional. I have posted 85 twice, but I have never posted a 90. It was a long day, a tough one bye. "

The 47-year-old is currently at 2,080 in the world with various injury problems that have affected him since he won the 2001. championship at Royal Lytham.

On his seventh hole nightmare he said: "I had some bad tee shots and then we thought the marshal had my ball, asked if it was a Titleist 2, I looked at it and saw a two and played almost the whole of the hole and it turns out with the wrong ball.

"There was a two-point penalty for the wrong ball and then I had to go back to the tee and actually start the hole. A very unique, terrible situation. "

Duval's score on the hole was originally given as a 15 before it was rounded to 13 and then back to 14. Duval believed he had shot 90 and signed his card accordingly, but more than one and a half hours later his score was changed by officials without further punishment.

Duval, who crowned 80 in his opening round in Carnoustie last year before he retired, defended his decision to keep returning for the tournament despite his low ranking

"It is not a reflection of everything I have done. It's just one of those terrible nightmare scenarios, "he added.

The previous worst Open Round was Ian Baker -Finch & 92 in the first round at Throne in 1997, while the worst round Guy McQuitty & # 39; s first round 25 over-par was in 1986.

Duval & # 39; s 14 out of par-five seventh was the highest score on an Open hole since Hermann Tissies & # 39 ; 15 on the eighth in Troon in 1950.