Brian Gregan has qualified for the semi-finals of the 400 metres at the World Athletics Championships in Moscow; however, Tori Pena has failed to reach the women's pole vault final.

The Clonliffe Harriers athlete finished sixth in his heat but made it through to the next round on account of being one of the four fastest qualifiers.

Gregan qualified in a time of 46.04, just half a second slower than his personal best 45.53.

The former European under-23 silver medallist will run in the opening semi-final in lane 2 on Monday evening at 8:05pm.

In the women's pole vault qualification this afternoon, Ireland's Pena (Finn Valley AC) was out to try to make her first pole vault final qualification at a major championships.

Pena has been in excellent form this season, and is the current national record holder in the event, having cleared an impressive 4.60m in California this June. Going to this afternoon's qualification Pena was ranked 15th in the IAAF World Rankings for 2013.

In the second qualifying group B of 11 vaulters, Pena first attempted the opening height of 4.45m and after two close attempts at clearing it, unfortunately also failed to make it on her third and final attempt and went out of the competition.

Pena will be disappointed with her performance this evening, considering the automatic qualifying height of 4.60m for the final was within her current abilities.