By Joshua Lees Zach Johnson has denied that his foul-mouthed rant during his second round at the Masters on Friday was directed at a group of spectators at the 12th hole. Johnson endured a difficult week at Augusta National, as he carded a disappointing three-over-par 75 in the second round to leave him seven-over for the tournament. The biggest blemish on his card came at the par-three 12th on Friday, as windy conditions made the Georgia course an even harder test. The 2007 champion saw his tee shot on the par-three sail way left into the azalea bushes, before his reloaded effort from the tee…