Wimbledon witnessed two high-profile defeats on Monday with Venus Williams and Naomi Osaka both exiting the tournament on Day One.

Yet tennis betting punters failed to take advantage of the two stunning defeats after one bookmaker revealed only a single bet was placed on an Osaka defeat.

Osaka was the second seed heading into Wimbledon having won the US Open and Australian Open within the past 12 months.

But she was undone by Kazakhstan’s Yulia Putintseva 7-6 6-2 on the grass courts of SW19.

The shock defeat was then followed up by Williams’ incredible exit as the veteran lost 6-4 6-4 to American teenager Cori Gauff.

Bookies avoided a big loss

Bookmakers Paddy Power priced a double loss on Osaka/Williams at 21/2 (+1050) on Monday.

Yet they told Bookies.com only one punter backed Putintseva to beat Osaka.

Gauff was not expected to threaten Williams on the grass but the stunning defeat was available at 16/5 (+320).

Gauff title price plummets

Teenager Gauff had never won a Grand Slam match before her triumph over Williams on Monday and bookmakers are already rushing to re-price the American.

Gauff had been floating around 250/1 (+25000) to win Wimbledon but Coral have now slashed those odds to 40/1 (+4000).

"There were two huge shocks at Wimbledon yesterday, although not many punters cashed in on them, with the double scarcely backed,” said Coral's Harry Aitkenhead.

“We were much more impressed by teenager Gauff and we now make her just 40/1 to go all the way and win the tournament, which would be one of the greatest sporting stories of all time.”

Pliskova and Barty now joint favourites

As for the favourites to win the Wimbledon women’s singles title, No. 1 seed Ashleigh Barty has now been joined by Karolina Pliskova.

Barty — the winner of the French Open last month — is 9/2 (+450) with Betway to win Wimbledon. But Pliskova’s price has now come in from 5/1 (+500) after she saw off Zhu Lin 6-2 7-6 in the first round on Monday.