Keller was a member of the US swim team at three of the Olympic Games from 2000 to 2008, where he won five medals. He won two gold medals while participating in the 800 meter free relay with teammate Michael Phelps. Ryan Lochte and Peter Vanderkaay at the 2004 Olympic Games in Athens and 2008 in Beijing. The 2004 season has since been named the race of the century.
After serving on the Olympic team, Keller faced adversity in his personal life after divorcing his wife in 2014.
In 2018, he told USA Swimming that he was struggling to pay child support and was living on his Ford Fusion, stating, “I didn’t know where to go because I couldn’t really go anywhere, so I just went there Seeing the most important people in my life and looking for advice and guidance. “
“Within a few years, I went from Olympic gold medalist to husband, homeowner, man with a variety of sales jobs – life insurance, software, medical devices, financial products – and father of three taking time to accept who I was without swimming in my life,” he told the organization at the time. “Swimmer was my identity for most of my life, and then I quickly switched to other roles and never gave myself time to get used to it. I really had problems with things. I did not enjoy my job and this misfortune and lack of “identity began to creep into my marriage.”