JACK NICKLAUS ON TWITTER

"Barbara and I just heard about Tiger's accident, and like everyone else, we are deeply concerned. We want to offer him our heartfelt support and prayers at this difficult time. Please join us in wishing Tiger a successful surgery and all the best for a full recovery."

GREG NORMAN ON INSTAGRAM

"He has mental strength stronger than most and has fought many battles and won many of them. His mental strength will win this battle. Prayers and thoughts to @TigerWoods and his family."

JUSTIN THOMAS AT NEWS CONFERENCE

"I am sick to my stomach. It hurts to see one of your ... closest friends get in an accident and I just hope he's alright. Just worried for his kids. I'm sure they are struggling."

PHIL MICKELSON ON TWITTER

"We are all pulling for you, Tiger. We are so sorry that you and your family are going through this tough time. Everyone hopes and prays for your full and speedy recovery."

TONY FINAU IN TV INTERVIEW

"When I saw the condition of his car, for me, I just hoped that he's OK, that's the biggest reaction really. Also a little bit of shock because we had something crazy happen in our sports world last year with Kobe (Bryant). I wouldn't say that dramatic of feelings, but you just hope Tiger is all right."

MASTERS CHAIRMAN FRED RIDLEY IN STATEMENT ON TWITTER

"Tiger Woods is part of the Augusta National family, and the news of his accident is upsetting to all of us. We pray for him, for his full recovery and for his family during this difficult time."

RETIRED US OLYMPIC SKIER AND FORMER WOODS GIRLFRIEND LINDSEY VONN ON TWITTER

"Praying for TW right now."

RETIRED LOS ANGELES LAKERS GUARD MAGIC JOHNSON

"Everyone send your prayers out to Tiger Woods! He was just in a bad car accident. Let us all pray for his speedy recovery."

RETIRED US OLYMPIC SWIMMER MICHAEL PHELPS ON TWITTER

"Prayers for @TigerWoods"

LONGTIME SPONSOR NIKE INC IN STATEMENT

"We are following the news around Tiger and our thoughts and heart are with him and his family at this time."

FORMULA ONE WORLD CHAMPION LEWIS HAMILTON ON INSTAGRAM

"So sad to hear this. Am thinking and praying for you @tigerwoods."

FORMER US PRESIDENT BARACK OBAMA

"Sending my prayers to @TigerWoods and his family tonight - here's to a speedy recovery for the GOAT of golf. If we've learned anything over the years, it's to never count Tiger out."

FORMER US PRESIDENT DONALD TRUMP IN STATEMENT

"Get well soon, Tiger. You are a true champion!"