Tiger Woods hit rock bottom at Firestone Country Club today with a final round 77 to finish 18-over par on a golf course he has dominated with seven career wins.

According to the PGA Tour, Woods' 18-over-par sets a new mark for his highest 72-hole score in relation to par.. Woods had twice previously finished with a score of 10-over-par through 54 holes. His total of 298 is also his highest score through four rounds of his PGA Tour career.

Since turning pro, Woods' previous worst finish as a professional in an event in which he played four rounds was a T60 at the first event in which he played as a pro, the 1996 Greater Milwaukee Open.

"It has been a long year," Woods said, choking up as he spoke to reporters.

Woods was set to finish near the bottom of the 80-man field, shooting over par in every round of an event for the first time since 2003.

"No, it doesn't surprise me at all actually," the 14-times major champion said before hinting at the impact of his unravelling marriage to his Swedish wife Elin. "It's been a long year."