Brooks Koepka's 2021 Masters opening round

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Brooks Koepka rest his knee on the no. 16 tee during Thursday's first round for the Masters at Augusta National Golf Club, Thursday, April 8, 2021, in Augusta, Georgia. [ANDREW DAVIS TUCKER/THE AUGUSTA CHRONICLE]

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Brooks Koepka tees off on no. 16 during Thursday's first round for the Masters at Augusta National Golf Club, Thursday, April 8, 2021, in Augusta, Georgia. [ANDREW DAVIS TUCKER/THE AUGUSTA CHRONICLE]

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Brooks Koepka tees off on no. 3 during Thursday's first round for the Masters at Augusta National Golf Club, Thursday, April 8, 2021, in Augusta, Georgia. [MICHAEL HOLAHAN/THE AUGUSTA CHRONICLE]

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Brooks Koepka tees off on no. 3 during Thursday's first round for the Masters at Augusta National Golf Club, Thursday, April 8, 2021, in Augusta, Georgia. [MICHAEL HOLAHAN/THE AUGUSTA CHRONICLE]

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Apr 8, 2021; Augusta, Georgia, USA; Brooks Koepka hits from the fairway on the 2nd hole during the first round of The Masters golf tournament. Mandatory Credit: Michael Madrid-USA TODAY Sports

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Apr 8, 2021; Augusta, Georgia, USA; Brooks Koepka hits from the fairway on the 2nd hole during the first round of The Masters golf tournament. Mandatory Credit: Michael Madrid-USA TODAY Sports

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Apr 8, 2021; Augusta, Georgia, USA; Brooks Koepka plays a shot on the 2nd hole during the first round of The Masters golf tournament. Mandatory Credit: Rob Schumacher-USA TODAY Sports

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Apr 8, 2021; Augusta, Georgia, USA; Brooks Koepka lines up a putt on the 2nd green during the first round of The Masters golf tournament. Mandatory Credit: Michael Madrid-USA TODAY Sports