Phil Mickelson actually has a great reason for wearing sunglasses in the rain

“Was this just wishful thinking that the solar planet's big star would come out (it didn't while Mickelson was playing)? Was this another really restrictive sponsorship deal? Or was this just Lefty's latest binder clipmoment?

Turns out, it was none of the above. After CBS Sports' Kyle Porter tweeted about the look, Phil responded with an explanation: