The Masters has a long list of dos and don’ts that both patrons and players must follow. Not on that list, as far as we can tell, is taking CBD oil while playing Augusta National, and Phil Mickelson may or may not be taking advantage of that fact.

During his second-round at the Masters, Mickelson was spotted ingesting something from an eye dropper. While we don’t know what it was, lefty looked sketchy while doing it.

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VIDEO: Is Phil Mickelson Taking CBD Oil at the Masters?