LONDON, Aug 12: Usain Bolt finally delivered what he had denied fans with his previous two victories at the London Games — a world record.

The crowds packing the main stadium on Saturday night erupted in wild cheers as Bolt took the baton from Yohan Blake and ran across the finish line to help Jamaica to victory in a record 36.84 seconds in the 4x100-metre relay.

Bolt added that title to the ‘double double’ he won in the 100m and 200m, defending both after his Beijing triumphs and writing his way into Olympic history as one of the finest — and zaniest — sprinters the world has known.

Spectators loved it, and chanted, “We want Bolt. We want Bolt!” as the runner shook his fingers, setting off a crowd wave around both tiers of the 80,000-capacity stadium.

The blistering relay by Bolt and his Jamaican speedsters brought London’s track and field events to a shimmering close.

Aided by Nesta Carter, Michael Frater and Blake, the party-loving, 1.96m Bolt kissed off his one-man Olympic show in style as they darted around the track in 36.84 seconds, beating their own record and leaving the United States trailing in their wake.As he crossed the line, Bolt cupped his hands in an ‘M’ shape above his head — a nod to Somali-born Briton Mo Farah who had earlier run away from the pack to win the hosts’ first men’s 5,000m gold.

“It’s always a beautiful feeling to end off like this,” Bolt said. “For me it’s just great that we closed the show on a bang, that is what it meant to me.

“I knew we could do it [world record] because the guys came out here, they were very hyped, they were ready, they were focused.”

The United States got the silver in 37.04, matching the old record that Bolt helped set at last year’s world championships.

Trinidad & Tobago took the bronze in 38.12 after Canada, which was third across the line, was disqualified for running outside its lane.

Bolt’s latest victory makes him the first person to win golds in the 100 and 200 metres and the 4x100-metre relay at consecutive Olympic Games. But while he won all three with world-record times in Beijing, his victories in the two individual sprints in London were outside the world marks he set in 2009.

Results: 1. Jamaica (Nesta Carter/Michael Frater/Yohan Blake/Usain Bolt) 36.84 seconds (world record); 2. United States (Trell Kimmons/Justin Gatlin/Tyson Gay/Ryan Bailey) 37.04; 3. Trinidad and Tobago (Keston Bledman/Marc Burns/Emmanuel Callender/Richard Thompson) 38.12; 4. France (Jimmy Vicaut/Christophe Lemaitre/Pierre-Alexis Pessonneaux/Ronald Pognon) 38.16; 5. Japan (Ryota Yamagata/Masashi Eriguchi/Shinji Takahira/Shota Iizuka) 38.35; 6. Netherlands (Brian Mariano/Churandy Martina/Giovanni Codrington/Patrick van Luijk) 38.39; 7. Australia (Anthony Alozie/Isaac Ntiamoah/Andrew McCabe/Josh Ross) 38.43; Canada (Gavin Smellie/Oluseyi Smith/Jared Connaughton/Justyn Warner) disqualified.—Agencies