Lewis Hamilton gives cryptic response over new Mercedes contract because of 'disaster' car

Wilder announces boxing return following double defeat by Tyson Fury

Tim Henman and Kyle Edmund have fun ahead of Wimbledon

Ferrari: Mick Schumacher drives in father's title-winning car

F1 preview: A lap of the Monaco Grand Prix

Halle Open: Federer defeats Tsonga to reach quarter final

Vettel admits Aston Martin car 'isn't where they want it to be'

McIlroy enjoys flying start to set pace at PGA Championship

F1: Spanish Grand Prix preview

‘He has his opinion, I have mine' - Tiger Woods on Phil Mickelson controversy

Conor McGregor drops out of richest athletes list after being No.1 last year

Robson announces retirement from tennis aged 28 after injury hell

Amir Khan announces retirement from Boxing

Andrew Symonds: Police give update following death of cricketer

McIlroy says he's 'chipped away' at weaknesses in career

Romain Grosjean announces end of F1 career

Denis Shapovalov hits umpire in the FACE with tennis ball

Lewis Hamilton has hinted that he could quit F1 if Mercedes' porpoising issues are not fixed by the end of next year. The Mercedes star said "only time will tell" if it will play a factor in his decision to remain or leave the sport.

The seven-time champion admitted he "imagined" the issue would be fixed by the end of next season when his current contract comes to an end. Hamilton hopes the porpoising is not something that will determine his future but failed to deny it would not be an issue.

When asked if the issues could prevent him from signing a new contract on health grounds, Hamilton responded: "Well, I meant I imagined we're going to get this fixed over by the end of next year, at least. So hopefully, that's not going to be something determined from racing longer, but time will tell."

Hamilton has