Berlin  - There was no world record for the first time but Usain Bolt reached another athletics milestone when he completed a second big event title treble as part of Jamaica's world champion 4x100 metres relay team on Saturday.

Steve Mullings, Michael Frater, Bolt and Asafa Powell claimed the gold in 37.31 seconds, missing the mark of 37.10 seconds Bolt and company set exactly 12 months ago at the Beijing Olympics.

Trinidad and Tobago came second with 37.62 and Britain was third with 38.02 seconds. The US relay was disqualified in the heats.

Bolt had run the 100m in 9.58 seconds and the 200 in 19.19 earlier in Berlin for world records and gold medals.

He is the third man to get triple sprint gold at the worlds, following Americans Maurice Greene (1999) and Tyson Gay (2007), but no one has ever achieved it at the worlds and Olympics.  (dpa)