NEW Zealander Jonelle Richards leads off Wiltshire's participants in the opening dressage phase of the 2012 Olympic eventing at Greenwich Park tomorrow.

Richards, who is based at Mildenhall near Marlborough, is 11th out at 11.36am for New Zealand.

South Africa's Alex Peternell, who is based at Hinton west of Chippenham, competes at 3.02pm on Asih, with Badbury-based Australian competitor Andrew Hoy, riding Rutherglen, at 3.40pm.

The county's other riders complete their dressage phase on Sunday, with Little Cheverell-based Lucinda Fredericks and Flying Finish, representing Australia, going at 11.28am.

Brazilian Marcelo Tosi, who based himself at Marston, near Devizes, in the run-up to the Games, goes at 12.46pm.

Marlborough-based New Zealander Andrew Nicholson, on Avebury, starts his bid at 1.10pm, while Fredericks' husband Clayton, on Bendigo for Australia, off at 2.46pm.

Two of the five Team GB riders are out on the first day tomorrow, with Nicola Wilson and Opposition Buzz going at 11.20am and Mary King and Imperial Cavalier off at 2.30pm.

On Sunday, Zara Phillips and High Kingdom go at 10.16am with Tina Cook and Miners Frolic off at 12.54pm.

William Fox-Pitt is the final Briton to go at 4.12pm with Lionheart.

UPDATES FROM THE EVENTING AT GREENWICH THROUGHOUT THE WEEKEND AT THE SPECIAL OLYMPIC SECTIONS AT GAZETTEANDHERALD.CO.UK AND WILTSHIRETIMES.CO.UK AND ON TWITTER @gazsport and @WTSport

REACTION AND PICTURES FROM THE OLYMPIC EVENTING IN NEXT THURSDAY'S GAZETTE & HERALD AND FRIDAY'S WILTSHIRE TIMES