Rory McIlroy makes solid start at Korea Open with opening 70 in first tournament back after month's break I felt I was a little rusty after the four weeks off, but I battled back nicely and to end up under par for the day wasn't too bad. McIlroy has struggled to hit form this year since switching his clubs and had not played since failing to qualify for the 30-man field in the PGA Tour's final play-off event in September. The Korea Open marks the start of a month-long tour of Asia for the former world No 1 that is guaranteed to earn him more than £3 million in appearance fees after a disappointing year. Clubhouse leader Jang claimed birdies on the fifth and 12th with an eagle on the 10th seeing him complete the round in 67, four under par, to finish one stroke ahead of Kang Sung-hoon, Yoon Jung-ho, Hoon Min-kyu and Eric Mina who were tied for second.