Alex Rodriguez Shares Shredded Shirtless Photo W/ Fitness Model Girlfriend

Alex Rodriguez isn't a pro athlete anymore, but don't tell his abs ... the legendary slugger shared a shredded shirtless photo, posing with his equally jacked girlfriend, and they look incredible!

48-year-old A-Rod and his fitness trainer boo Jaclyn Cordeiro are on vacation in the Dominican Republic ... and the couple shared some snaps from the trip. Alex's daughter Ella is also on the vacay.

Rodriguez last played baseball in 2016 as third baseman for the New York Yankees, before hanging up his glove and leaving the sport as one of the most feared hitters ever.

Despite being an immortal player, A-Rod admittedly let himself go a bit in retirement, so much so his family expressed concern for him in late 2021, saying he "looked unhealthy."

Rodriguez decided to make some changes to his life (more plants, less red meat, intermittent fasting, and walking) ... and he says it made all the difference.

In 2023, Alex revealed, with help and support from Jac, he'd lost 32 pounds!

Rodriguez didn't spend the whole trip posing without a shirt (though could you blame him?) ... he also spent some quality time with his fam, from some fun in the sun to a chess game with his daughter.