MLB star Jayson Werth got into it with a police officer during his DUI arrest back in April -- ultimately telling the cop he's not sure the officer had his best interests at heart.
Werth was pulled over in Scottsdale, AZ on April 17 for expired registration and, during the stop, the officer suspected he was drunk.
Werth tried to celebrity his way out of the arrest -- handing the cop an MLB "courtesy card" which shows he's a pro baseball player -- and told the cop, "We do a lot of work with you guys.