Bolt won't be able to stay away - Gatlin
Usain Bolt could reconsider his decision to quit, according to American sprint rival Justin Gatlin.
Gatlin finished second behind Bolt in last year's Olympic 100m final and also at the past two World Championships.
Bolt is due to bow out on the global stage in next month's World Championships in London after the 100m and 4x100m relay, but Gatlin reckons the Jamaican the lure of competition difficult to resist.
Asked whether he might change his mind, Gatlin said: "Why not? He has that rock star mentality where he can travel the world, have fun, party in different places and then say: 'I want to take this seriously one more time'.
"He has the opportunity to come back, once he leaves he can have a year of rest and say: 'I love track so much I can't leave it too soon'.
"He's a true competitor - in my whole career I've never raced anyone who's such a true competitor and who's going toe-to-toe with me."
Meanwhile, Mo Farah has decided he will end his track career at the Diamond League final in Zurich next month.
The 34-year-old had planned to quit the track after August's Diamond League meeting in Birmingham which follow the World Championships - where he is due to race in the 5000m and 10,000m in London.
But he will instead race in Zurich on August 24, four days after the Birmingham meeting, before quitting to focus on the marathon.
Ricciardo puts down marker
Daniel Ricciardo cemented his status as a real contender for the Hungarian Grand Prix as he completed a surprise practice double yesterday.
Ricciardo's Red Bull team have a number of updates on their car at the Hungaroring for the final round of the championship before Formula One's four-week summer break.
And the early signs appeared promising for the former world champions after Ricciardo, winner of last month's Azerbaijan Grand Prix, soared to the top of the time sheets in both sessions.
Ricciardo finished 0.183 seconds clear of championship leader Sebastian Vettel while Lewis Hamilton, who trails the German by a single point in this year's title race, was only fifth.
Hamilton, who is bidding to equal Michael Schumacher's all-time pole record, failed to set a competitive time on the supersoft tyre - the fastest of the compounds available this weekend - and was only three-tenths shy of Ricciardo's best effort.