Phil Mickelson made history by becoming the oldest golfer ever to win a major championship. ā€œLeftyā€ was then trying to keep his momentum going in the Charles Schwab Challenge at The Colonial. However, his first day didn't go well at all: He finished the day at three over par.

Mickelson didn't seem to be bothered. He gave a hilarious answer after his performance:

Let them know, Phil.

To the surprise of nobody, he is wildly unfazed by his performance on Day 1 at The Colonial. After all, his previous accomplishment will leave him on a high wave of momentum for a long time.

Obviously, Phil wanted to perform well and show the world that it wasn't just a one-time thing by winning the PGA Championship.

Earlier in May, Mickelson posted a tweet that potentially stirred his improbable comeback en route to his historic victory:

Then he made history just weeks after that post. Now, after the first day of the Charles Schwab Challenge and a total nightmare performance, it's not looking too good for Phil Mickelson in his first event after his landmark major. It was obviously a quick turnaround, and in many ways, the emotional hangover from his historic win is in many ways a harder challenge to address than any strictly physical challenge he might have to endure this week. The setup at Colonial isn't nearly as tough or demanding as the layout at a major tournament. Jordan Spieth and Sergio Garcia shared the first-round lead after shooting seven-under par scores.

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As a point of comparison, Phil Mickelson won in Kiawah Island this past weekend with a six-under score for the whole tournament.

This was a rough day at The Colonial for Phil. Nonetheless, he doesn't care one bit and is still celebrating his victory from the PGA Championship.

Never change, Phil Mickelson, never change.