BRUSSELS, Sept 4 (Reuters) - Sweden's ⁠pole vault world record-holder Mondo Duplantis withdrew from ⁠the Diamond League Final on Friday with leg tightness, ‌raising questions over his fitness a week before the World Athletics Ultimate Championships.

"We will see if I can make it to the Ultimate Championships. ​I don't have the answer right ⁠now," he said.

The withdrawal ⁠is the latest blow for the double Olympic gold medallist, who ⁠was ‌forced to pull out of the competition at the London Diamond League meeting with leg tightness ⁠in July.

"This problem in my leg started in ​London," Duplantis ‌said. "It felt okay since then and I put a ⁠lot of work ​in, but the pain came back in Zurich (last week).

"I pushed through it, probably a little bit too much. I said ⁠that if I felt this irritation during ​my warm-up, I wasn't going to jump. Therefore, I made the difficult decision not to start.

"The worst possible thing to ⁠do is having to pull out of a competition. My head is everywhere right now. It's super difficult but that's life, that's the life of an athlete. I try to ​stay calm and positive."

The inaugural World ⁠Athletics Ultimate Championships, scheduled for September 11 to 13 in ​Budapest, offers a record $10-million prize fund, ‌with each individual champion pocketing $150,000, the ​biggest winner's cheque in track & field history.

(Reporting by Lori Ewing; Editing by Ken Ferris and Clare Fallon)