At the 2012 Summer Olympics, he competed in the men's 5000 metres, finishing 40th overall in Round 1, failing to qualify for the final. Soon after the London Olympics, he underwent knee surgery to remove a benign tumor in his right knee, which had affected him throughout the Olympics. He returned to the marathon on April 21, 2014, finishing in 21st place with a time of 2:19:05 at the 2014 Boston Marathon.