|World Athletics Championships|
|Venue: Beijing National Stadium, China Dates: 22-30 August|
|Coverage: Live on BBC TV, Red Button, Radio 5 live, online, mobiles, tablets and app.|
Mark English has failed to make the 800m final at the World Championships after finishing fifth in his semi-final in Beijing on Sunday.
The Letterkenny athlete ran an impressive 1:45.55, which was the 11th fastest time in the semi-finals.
English's run was also over a second quicker than his time in Saturday's heats at Beijing National Stadium.
The 22-year-old progressed to the semi-finals as a fastest loser from the heats, where he clocked 1:46.69.
A back injury severely inhibited English during the early stages of his summer campaign.
The UCD runner finished out of the medals at the European Under-23 Championships in the early part of July.
However, he showed a return to form as he mixed it with several of the world's best when he took fourth at the London Anniversary Games with his time of 1:45.49 also a qualifying mark for next year's Olympics.
That time was .65 outside his personal best set in 2013.
Irish 400m hurdles star Thomas Barr also missed out on a place in a final after finishing fourth in his semi-final.
Waterford man Barr, 23, ran 48.71 on Sunday, an improvement on his 49.20 in Saturday's heats.
Meanwhile, Ciara Mageean improved her 1,500m personal best to 4:07.33 when she took victory at the British Milers Club meeting in Solihull on Saturday night.
The Portaferry woman, who is chasing Olympic qualifying time of 4:06, cut .12 off her previous best set in 2011.
Mageean opted to miss the Worlds despite being offered a place.