The Dragons were competitive but tired in the second half

The Ospreys and Dragons fell to ignominious defeat in their assault on the Middlesex Sevens at Twickenham.

Their attempts to win the 82-year-old charity event ended within the first 90 minutes of its nine hours with first-round losses.

The Ospreys never threatened in a 26-5 loss to Sale, while the Dragons were more competitive before an eventual 28-19 defeat to London Irish.

Harlequins won the title, beating the British Army 22-12 in the final.

Saracens defeated Northampton 26-7 to claim the second-tier Plate competition.

The Ospreys lost 33-17 to Leeds in the Plate, while the Dragons fell 29-14 to Northampton.

For winners Harlequins, England's David Strettle was making a triumphant Twickenham return six months after suffering his latest Test career setback with injury.

"It was a special day for me, and I know it was special for the rest of the boys," he said.

"It is not what about talking or training; it is what you do on the pitch - and with England and Quins, that is the way to answer anyone's critics."

Strettle, who was overlooked for England's 32-strong elite player squad announced by England manager Martin Johnson last month, delivered six tries throughout the tournament.