Rumford played on the PGA Tour in 2008, after earning his card through qualifying school, finishing the season ranked 149th in the FedEx Cup standings. He returned to play on the European Tour in 2009.
In April 2013, Rumford won for the fourth time on the European Tour and for the first time in six years at the Ballantine's Championship in South Korea. In a sudden-death playoff, Rumford eagled the first extra hole to defeat Marcus Fraser and Peter Whiteford. In the playoff, after both opponents had failed to reach the par-five 18th in two, Rumford fired his approach to within four feet of the hole to set up the eagle and seal victory. The following week he continued his good form winning the Volvo China Open, his fifth on the European Tour, his score of −16 giving him a four stroke winning margin over Mikko Ilonen. With this win he became the 31st golfer to win consecutive events on the European Tour and the first since Branden Grace in January 2012 and moved to the top of the Race to Dubai standings.[3]