Tiger Woods says the rules controversy that followed Dustin Johnson down the stretch at the U.S. Open was "awful" and wasn't fair to the eventual tournament champion or his fellow competitors.

Woods was watching as USGA officials told Johnson at the 12th hole on Sunday that they'd decide after his final round whether to penalize him for his actions on the fifth green. Johnson had to play the final seven holes not knowing what his score was or how far ahead he was of the rest of the field.

Speaking Wednesday before his tournament, the Quicken Loans National, Woods called the situation "frustrating to watch" and said players made mistakes because of the uncertainty.

Woods said if it were him, he would've said a few more words during the round than the less-feisty Johnson did.