* Storm claimed a first professional victory in almost 10 years (adds details, quotes)
JOHANNESBURG, Jan 15 (Reuters) - England's Graeme Storm claimed a first European Tour trophy in almost 10 years after holding off the challenge of world number two Rory McIlroy on the third playoff hole to win the South African Open on Sunday.
Storm had held a three-shot lead going into the final round, but could only manage a 71 for a tournament total of 18 under par.
McIlroy led by one shot going into the last two holes, but bogeyed 17 and had to be content with a 68 to force a playoff.