The Spanish men's doubles team of Fernando Verdasco and David Marrero are being investigated for suspected match-fixing in a first-round contest at Wimbledon.

Verdasco, a former Australian open semi-finalist, and Marrero lost that match last Thursday 7-6 (8-6), 6-4, 6-7 (7-9), 6-1 to Argentina's Leonardo Mayer and Portugal's Joao Sousa.

Verdasco is being investigated. Credit:Eddie Jim

The ABC first reported on the probe, but it was the New York Times, citing online gaming website Pinnacle Sports, that confirmed the names of the players under suspicion in an article on Wednesday.

Pinnacle confirmed that the match in question had been flagged due to "suspicious betting behaviour," the Times said, adding that the website noted that it had observed a series of bets placed from accounts with a history of wagers on suspicious matches.