Dustin Johnson's Masters prep is officially over.
After a convincing win at the WGC-Dell Technologies Match Play, Johnson was expected to headline the field this week at the Shell Houston Open, where he finished third a year ago. Instead, he opted to withdraw Monday and was replaced in the 144-man field by Scott Stallings.
It's hardly a surprise given the fact that Johnson played 112 holes across seven different matches en route to his victory at Austin Country Club. After the win, the world No. 1 seemed to soften on his commitment to tee it up at the Golf Club of Houston.