Berlin's Olympic Stadium awaits the start of the 2009 IAAF Athletics World Championships
The finishing touches are put in place ahead of Saturday's start, which among others sees British heptathlete Jessica Ennis in action
Britain's Ennis gets her heptathlon campaign under way in fine style after winning the 100m hurdles to lead the competition after one event
And there is good news for GB's Carl Myerscough who comes through qualifying to reach Monday's shot put final
All eyes turn to triple Olympic champion Usain Bolt with the Jamaican strolling through his 100m heat to qualify for Saturday's later second round
Britain's Simeon Williamson (left) and team-mate Tyrone Edgar advance in the 100m opening round with comfortable second places. Williamson clocks 10.34 and Edgar's time is 10.42.
Former world record holder Asafa Powell almost suffers a shock exit. The Jamaican makes a blistering start but then winds down 50m into the race and ends up third in a time of 10.38.
Ennis later turns her attentions to the high jump and after leaping 1.92metres, stretches her lead in the heptathlon to 181 points
In the Berlin heat Russia's Valeriy Borchin wins the first gold medal of the championships in the men's 20 km walk final
After a summer of injury niggles and patchy form Christine Ohuruogu is second in her 400m heat behind American rival Sanya Richards. Fellow Brit Nicola Sanders also progresses
Britain's Andy Baddeley (far left) progresses through to the semi-finals of the 1500m, behind Amine Laalou of Morocco
In the third event of the day, Ennis waits until the final round before unleashing a personal best of 14.14m in the shot put, to hold the heptathlon lead by 138 points
Chambers continues his fine form in round two of the 100m, blazing away from Richard Thompson, of Trinidad and Tobago and German Martin Keller
Usain Bolt and training partner Daniel Bailey are so far out in front in their 100m quarter-final that they can share a smile, while Brit Simeon Williamson tries his heart out but fails to qualify
Ennis, who was fourth in Osaka two years ago, continues her fabulous form by securing the fifth-best throw in the shot put, tossing the ball 14.14 metres - it's a phenomenal effort on her final throw and the 23-year-old stretches her lead
British pole vaulter Kate Dennison has an impressive outing on the first day. She qualifies for the final with a clearance of 4.55m, the only height defending champion Yelena Isinbayeva needed to attempt to progress.
Welshman David Greene produced a stunning run in his 400m hurdles heat clocking 48.76 to leave double Olympic champion Angelo Taylor trailing in fourth.
The heptathlon's final event of day one and Ennis dominates in the first 200m heat clocking 23.25s. She will start the final day 307 points ahead of Nataliya Dobrynska. "I can't believe everything went so well," she says.
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