TIGER Woods withdrew from the WGC-Cadillac Championship with a leg injury, raising doubts about his fitness for next month’s Masters at Augusta National.The former world number one had been limping during his final round when he abruptly called it quits and left the course after completing 11 holes.He was three-over-par for the day and seemingly out of contention to win the tournament.Woods initially told PGA officials it was a left leg injury but later clarified the nature of his problem in a statement."I felt tightness in my left Achilles warming up this morning, and it continued to get progressively worse. After hitting my tee shot at 12, I decided it was necessary to withdraw,” he said.