Yankees pitcher Phil Hughes underwent X-rays on his injured right rib on Thursday and has been cleared to begin a throwing program in roughly two weeks, according to The Associated Press. Hughes has been sidelined with a fractured rib since late April. Manager Joe Girardi claims that he will need six weeks of throwing before he returns to the mound for New York. He was 0-4 with a 9.00 ERA in six outings before the injury.