Benson, the 36-year-old former No.1 overall Draft pick and veteran of nine Major League seasons, told FOXSports.com that his long history of elbow and shoulder injuries have prevented him from being at his best.
"I'm done," Benson told the website via phone from his home near Atlanta. "I decided pretty much after this past season that I wasn't going to pursue anything. I've been putting way too much into it and not getting enough out of it, as far as the rehab, working out, training, and then not getting the type of results I expect from myself.
"I wanted to make this decision now, rather than go into another season on another Minor League deal. I didn't want to go through the head games of, 'Am I going to make the team?' I don't mind the pressure. I just don't want to fall into another situation like I had the last couple years, where I busted my tail getting back and then got hurt again shortly after I made the team."
Benson was selected by Pittsburgh with the first overall pick in the 1996 First-Year Player Draft and broke in with the Pirates in '99 at the age of 24, had Tommy John surgery on his right elbow in 2001 and suffered shoulder maladies in '03. He went to the New York Mets in '04 and pitched for Baltimore in '06. He suffered a tear in his rotator cuff in '07 and didn't pitch in the big leagues again until '09, when he made the Opening Day roster of the Texas Rangers.
But that comeback was cut short after eight games, and another attempt, with the D-backs last year, was limited to three games. Benson's career totals include a 70-75 record with a 4.42 ERA in 206 games (200 starts).
"This is a chance for me to be at home with my kids and enjoy the family life, which I'm not used to," Benson told FOXSports.com. "It's something a lot of guys welcome once their career is over."
Doug Miller is a reporter for MLB.com. This story was not subject to the approval of Major League Baseball or its clubs.