Expensive Swiss mechanical watches don't have much practical use on the field, court, or track, though it's not uncommon to see the world's biggest athletes wearing high-end, luxury timepieces during their events.
Watch brands are eager to sponsor the world's most elite athletes, including fighters like Floyd Mayweather to tennis champions like Roger Federer and Rafael Nadal.
Scroll down to see 16 of the most expensive watches worn by the world's top athletes, ranked in ascending order by price:
SEE ALSO: 10 luxury watches that are actually worth the investment
Neymar — Gaga Milano, $2,100 (£1,569).
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Neymar's love of watches is well documented, with his trip to a Gaga Milano store ending in a $180,000 (£13,4620) purchase and an endorsement deal. Spending that much in one go might seem excessive, but when you're one of the highest paid football stars in the world it becomes a bit more understandable. Despite his own line of timepieces being on the lower end of the luxury watch bracket, it looks as though he has some special editions worth much more in his collection.
Price according to Gaga Milano.
Andy Murray — Rado Hyperchrome XXL, $3,475 (£2,600).
When Andy Murray won his first Wimbledon back in 2013 he was a Rado brand ambassador, and as soon as he won, he reportedly hurried to slap on his Rado Hyperchrome. He put it on so quickly he didn't notice that it was seven hours out. He has since dropped Rado as a sponsor and instead works with brands such as Jaguar and Under Armour.
Price according to the Daily Mirror.
David Beckham— Tudor Black Bay Chrono, $4,480 (£3,350).
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David Beckham is one of the major sponsors for Tudor's Born to Dare campaign and is often seen wearing one of the brand's highly popular watches. Beckham sits alongside other high-profile ambassadors of Tudor such as Lady Gaga and the New Zealnds All Blacks rugby team.
Price according to Tudor.
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