An apparent push nearly put pay to Lynsey Sharp's hopes of an 800m final place at the World Championships after she was initially disqualified from the semi-finals - only to be reinstated and placed into the final.

The Scot was fast enough to qualify via a fastest loser spot with a time of 1:59.47, but she was disqualified shortly after crossing the finish line in her semi-final for reportedly pushing America's Charlene Lipsey - who finished third.

Sharp did not speak to the media following her race and British Athletics lodged an appeal to the IAAF - an appeal that was upheld.

Sharp looked to be struggling in the home straight of a fast heat - won by Caster Semenya in 1:58.90 - and when Lipsey moved wide to overtake the South African, she seemed to cut in front of Sharp.

The movement did not clearly hamper the Scot, but in the closing ten metres of the race replays show Sharp's arm appear to push Lipsey - but the IAAF judges overturned their initial decision and Sharp lives to run another day, namely Sunday's final.

"I felt it a couple of times," said the American. "I don't know which one she got DQ'd on, but I got hit a couple of times.

"Caster was in lane one so I couldn't be in there, I had to run wide, I wasn't deliberately trying to block her."

Scotland's other representative on the night, Chris O'Hare, enjoyed better fortunes though and safely secured passage to Saturday's 1500m final.

The 26-year-old from the Borders clocked 3:38.59 in his heat to move through as the fourth fastest qualifier.

"This is the most deeply rooted confidence I've ever had," he said. "I was talking with my psychologist at the start of the year and it was about building a centralist confidence, because that is just confidence beyond belief.

"Previously I've had this superficial confidence that I've managed to talk myself into. But this year I was a bit nervous about what was going to unfold in the warm up.

"But I turned into my coach and he said I didn't have to be on top form, I just had to qualify, so that's a good spot to be in.

"I knew I didn't have to be 100 per cent, I was though, and that's good. Having that deep rooted confidence has been huge for me."

But despite his newfound belief, O'Hare knows he faces a battle for a medal on Saturday.

"The final will have 12 guys all wanting a medal Theres more guys than medals and it's going to be a fight, so that's what I'm ready for," he added.

"The main thing is that I've come in healthy and fit, and to be fair I've not had a year like that ever before - it's big for me to come in healthy and happy."

You can help the next generation of young British athletes by getting involved in SportsAid Week this September with London 2012 hero Greg Rutherford MBE.

Find out more about how you can support the week of fun and fundraising by visiting www.sportsaid.org.uk/sportsaidweek