Dallas Braden, the former A's left-hander who pitched the 19th perfect game in major-league history, said Tuesday he is retiring after failing to come back from multiple shoulder surgeries. "There is nothing left in there, it's just a shredded mess," Braden said by phone. "I left my arm on the mound at the Coliseum, and I'm OK with that." The 30-year-old Braden, a Stockton native, went 26-36 in five seasons with Oakland, but he will be best remembered for his Mother's Day perfect game at the Coliseum against Tampa Bay in 2010. Braden, who as a teenager had lost his mother, Jodie Atwood, to cancer, was able to celebrate his achievement on the field with his beloved grandmother, Peggy Lindsey. "That game will always define the one solid day of work I had and the fact that I got to share it with my grandmother - only a few people appreciate the magnitude of that," Braden said. "That was living the dream." Braden has few regrets about his injury-shortened career. And he bears no ill will toward the A's despite one of the team's former doctors accidentally severing a nerve in his foot during surgery to remove a cyst in 2009. Braden filed a lawsuit after the incident.