Watch: Baseballer's embarrassing wardrobe malfunction

Pablo Sandoval. Photo / Getty

Pablo Sandoval made his first appearance of the season on Sunday, and it didn't go quite as planned.

The Boston Red Sox third baseman struck out three times in four at-bats during Boston's 8-4 victory over the Toronto Blue Jays.

And if getting K'd three times in his season debut wasn't bad enough, Sandoval suffered an extremely embarrassing moment in his first at-bat. The Kung Fu Panda managed to break his belt while taking a swing against Jays starter R.A. Dickey.

Sandoval took off the busted belt and continued the at-bat without one, then replaced it when he returned to the dugout.

It's been a rough couple of months for Sandoval. He's been highly criticised by Red Sox fans for his off-season weight gain and recently lost his starting job to Travis Shaw for performance reasons.

2015 was his worst ever season, as he had the poorest defence among all qualified third basemen, and 2016 hasn't been much better.

Sandoval has been a huge disappointment for the Red Sox so far, hitting .245/.292/.366 with 10 home runs, 47 RBI and 73 strikeouts in 2015 and failing to maintain the starting third base job.

He's owed $US77 million through 2019, making the pressure to perform even greater.

Sandoval has been waiting for an opportunity to show he can turn things around this season, but he certainly got off to a rocky start.

-news.com.au