Brian Gregan has finished seventh in his 400m semi-final at the World Athletics Championships in Moscow, ending his involvement in the event.

Gregan clocked 45.98 with Yousef Ahmed Masrahi of Saudi Arabia winning the semi in 44.61. 

With only the top two in each three heats, and the two fastest losers qualifying, 23-year-old Gregan's run in the competition comes to a premature end.

"These championships came a little bit too early for me" - Brian Gregan

Post-race, Gregan told the media that his recent injury problems, which have dug into his training time, affected him today.

He said: "Missing that much training and to come back and run pretty much 46.0 and 45.9 is positive.

"With a bit more training I think I can go faster at the end of the season; these championships came a little bit too early for me.

"The last four weeks have been hell and I'm just happy to be back running. Hopefully this is the end of the injuries and I can get a bit of training in.

"If the injuries had come a lot earlier in the season, I would have finished a lot higher. Everything in the last month has been on-and-off, so it's just not ideal.

"But this will stand me in good stead for the Europeans in Zurich next year."

As to when he would be back to full strength, Gregan felt he wasn't that far away, saying:  "Hopefully soon, they [the injuries] are starting to clear up which is the main thing.

"This is the first time I'm starting to feel like myself again, so I've got that bit of a spring back to me.

"I just need a couple more training sessions and I'll be good to go.

"My last 100m is a bit weak because I just haven't got the training in.

"But I felt I came out a lot better, I just didn't have that extra gear around the top bend where everyone pulled away and I had to claw  them back, which is difficult at this level."