Usain Bolt has started his A-League adventure with a brief training session, explaining he settled on what is essentially a timeless trial with Central Coast after knocking back offers from Europe.

Bolt’s “indefinite” training period with the Mariners kicked off at Central Coast Stadium in front of a media contingent that numbered almost 100.

A 15-minute passing drill, which Bolt completed without any terrible gaffes, was coach Mike Mulvey’s only chance to judge the Jamaican sprint superstar’s footballing skill.

A trial game on August 31 shapes as Bolt’s likely debut but Mulvey won’t rush his decision on whether the eight-time Olympic gold medalist deserves a contract.