Let's be real. Headley is 30 next season and to date has put up one "star" caliber season.
Look where he plays half his games. Even with the slow start this year with the injury, his OPS+ is 107. Last year 145. year before 120. His OPS on the road for his career is .820. Last year his OPS on the road was .937. 2011 was .864.
And is a plus defender.