Aaron Wise has withdrawn from next week's Masters to focus on his mental health.
The world No 45, who was named PGA Tour rookie of the year in 2018 after winning the AT&T Byron Nelson tournament in Texas, announced his decision on social media.
The 26-year-old wrote on Instagram: "Regretfully I am withdrawing from The Masters today.
"Golf is just as much a mental game as it is one of physical skill, and the mental piece of it has been a struggle for me recently.
"I don't take the significance of playing at Augusta lightly, but know that I need to take some time away to focus on my mental health so I can get back to competing at a level I am proud of.
"This hurts, but it's needed. See you all soon."
Wise, who finished 17th on his Masters debut in 2019, has missed the cut in four of his last five strokeplay events on the PGA Tour and took 10 on the 18th hole at Sawgrass as he carded an opening 80 in the Players Championship.
Watch The Masters, from Augusta National, live this April live on Sky Sports. Live coverage from the opening round begins from 2pm on Thursday April 6 on Sky Sports Golf!
Key TV times (all on Sky Sports Golf unless stated)
Monday
1700-1900 - On the Range LIVE!
1900-2200 - Live from The Masters!
Tuesday
1400-2200 - Live from The Masters!
Red button - 1400-1600 On the Range
Wednesday
1400-1900 - Live from The Masters!
1900-2230 - Par-3 contest LIVE!
Red button - 1400-1600 On the Range
Thursday
1400-1930 - Featured Groups LIVE!
1930-0030 - The Masters: Day one LIVE!
Red button (exact timings TBC) - 1330 On the Range, 1345 Holes 4,5,6, 1545 Amen Corner, 1645 Holes 15,16
Friday
1400-1930 - Featured Groups LIVE!
1930-0030 - The Masters: Day two LIVE!
Red button (exact timings TBC) - 1330 On the Range, 1345 Holes 4,5,6, 1545 Amen Corner, 1645 Holes 15,16
Saturday
0800-1100 - Masters Breakfast LIVE!
1500-1930 - Live Masters build-up!
1930-0030 - The Masters: Day three LIVE!
Red button (exact timings TBC) - 1515 Featured Groups, 1530 Holes 4,5,6, 1600 On the Range, 1645 Amen Corner, 1730 Holes 15,16
Sunday
0800-1100 - Masters Breakfast LIVE!
1500-1830 - Live Masters build-up!
1830-0030 - The Masters: Day four LIVE!
Red button (exact timings TBC) - 1515 Featured Groups, 1530 Holes 4,5,6, 1600 On the Range, 1645 Amen Corner, 1730 Holes 15,16