"It's hard to imagine golf without you or anyone more important to the game than the King," Tiger Woods tweeted.

The golf world is mourning the death of Arnold Palmer, the legendary sportsman who died Sunday at age 87 in a hospital in Pittsburgh.

The gentleman golfer from Latrobe, Pa., whose thrilling, go-for-broke style made him the first television superstar of his sport and earned him generations of devoted fans, was the first client of Mark McCormack's legendary sports management firm IMG and later co-founded the Golf Channel, the first cable network devoted to one sport.

As news of his death spread, many in Hollywood and the golfing community hit social media to pay tribute.

Here are just some of the messages that were tweeted Sunday night:

Here's to The King who was as extraordinary on the links as he was generous to others. Thanks for the memories, Arnold. pic.twitter.com/UlyfpIBOL2

— President Obama (@POTUS) September 26, 2016

Thanks Arnold for your friendship, counsel and a lot of laughs. Your philanthropy and humility are part of your legend.

— Tiger Woods (@TigerWoods) September 26, 2016

(2/2) It’s hard to imagine golf without you or anyone more important to the game than the King.

— Tiger Woods (@TigerWoods) September 26, 2016

I just got the news at about 8:45 that Arnold had passed. I was shocked to hear that we lost a great friend (continued) pic.twitter.com/skehUsQgww

— Jack Nicklaus (@jacknicklaus) September 26, 2016

Really sad news: The great Arnold Palmer, the "King," has died. There was no-one like him - a true champion! He will be truly missed.

— Donald J. Trump (@realDonaldTrump) September 26, 2016

I miss u already Arnie. My love goes to the Palmer family. The world lost a great man today. pic.twitter.com/i6ijf61z69

— Darius Rucker (@dariusrucker) September 26, 2016

So lucky to have met the king #ArnoldPalmer. He was such an inspiration on and off the course. Thinking of his family tonight. God Bless.

— Carson Daly (@CarsonDaly) September 26, 2016

Very sad news to hear of the passing of the great Arnold Palmer. We will miss you very much. The King and Legend. RIP

— Sergio Garcia (@TheSergioGarcia) September 26, 2016

From one King to another, RIP Arnold Palmer. A class act and true champion of his sport. #RIPKing

— Larry King (@kingsthings) September 26, 2016

Arnold Palmer, of course, will be remembered as a great golfer & sportsman. I'll remember him as the genius behind the greatest drink ever!

— David Axelrod (@davidaxelrod) September 26, 2016

RIP Arnold Palmer

A transformative athlete for all times.
He was so cool to me as a kid, like Elvis and Sinatra. pic.twitter.com/RyeWw8U1YT

— Richard Lewis (@TheRichardLewis) September 26, 2016

RIP Arnold Palmer He changed the game of golf-I had the honor of meeting him & 2night I had the honor of remembering his life & career on TV

— Bret Baier (@BretBaier) September 26, 2016

The King. Got to spend time with Arnold Palmer at Augusta, which I will remember forever, and that great laugh, and that amazing swing. #RIP pic.twitter.com/wUGzJjgPKM

— Rachel Nichols (@Rachel__Nichols) September 26, 2016

Sorry to hear #arnoldpalmer passed today. Class act on and off the golf course. My favorite thing about him was his generosity to the fans

— Charles Kelley (@charleskelleyla) September 26, 2016

Ah, rats. Rats. Arnold Palmer was one of the guys held up to people of my generation as a class act. Rats. https://t.co/ns1VFl92gA

— Hart Hanson (@HartHanson) September 26, 2016

Arnold Palmer was a classy guy and an American treasure. RIP

— Touré (@Toure) September 26, 2016

OMGosh sad news! Will miss that vice handshake and glint in your eye as you tried to crush my hand! RIP King Arnold pic.twitter.com/b9eDVP9ADJ

— Sir Nick Faldo (@NickFaldo006) September 26, 2016

R.I.P. Arnold Palmer. Anyone with a draaank named after 'em is a bad motherfletcher and whatnot.

— George Wallace (@MrGeorgeWallace) September 26, 2016

Sad day losing The King... Arnold Palmer an absolute gentleman. I owe you for that interview in 94' my friend

— Chris Harrison (@chrisbharrison) September 26, 2016

Sad day in golf. RIP to the King. #arnoldpalmer

— Paige Spiranac (@PaigeSpiranac) September 26, 2016

RIP #arnoldpalmer. You changed the game with your charisma and personality. Every player, me… https://t.co/RHuCgP6NCU

— Greg Norman (@SharkGregNorman) September 26, 2016

The Legends of all Legends in the game of golf! RIP my friend, always loved u and always will! God Bless my Friend! #AP pic.twitter.com/HPZthEnDmo

— John Daly (@PGA_JohnDaly) September 26, 2016

Saddened to hear about the great Arnold Palmer's passing. I had the honor of spending time with him and he was an amazing man and American.

— Donald Trump Jr. (@DonaldJTrumpJr) September 26, 2016

RIP Arnold Palmer. You are a LEGEND. pic.twitter.com/qcQdzkAVLH

— OneRepublic (@OneRepublic) September 26, 2016

RIP Arnold Palmer

— Mac (@MacMiller) September 26, 2016

Very sad day for the Golf Community and my Wake Forest Family...Rest in Paradise Mr. Palmer! #GoDeacs #ArnoldPalmer pic.twitter.com/l1Hrx2ldUt

— Chris Paul (@CP3) September 26, 2016

I'll miss you friend #ripTheKING pic.twitter.com/KIoz0CH59F

— Rickie Fowler (@RickieFowler) September 26, 2016

Such a sad day. One of the highlights of my life was getting to know The King. He will be missed.. #AP #longlivetheking

— Brandt Snedeker (@BrandtSnedeker) September 26, 2016

Absolutely gutted to hear the news of Mr. Palmer.. He is, and always will be, known as The King. RIP to one of the greatest people to live!

— Justin Thomas (@JustinThomas34) September 26, 2016

Mr. Palmer was truly one of golf's greatest icons. His legacy will live on. #RIPTheKing

— Dustin Johnson (@DJohnsonPGA) September 26, 2016

Just heard the news about #TheKing. Can't believe it. Amazing man and his legacy in the game and in our hearts will live forever. #RIPArnie

— Graeme McDowell (@Graeme_McDowell) September 26, 2016

Wow just got the chills. Nicest man in golf I have been around. And will never forget that practice round together at Augusta. Miss u King!!

— Ricky Barnes (@RealRickyBarnes) September 26, 2016

Arnie was what every great athlete should be. A great golfer, and a gentleman who treated everyone with dignity. That's why he was so loved.

— Vice President Biden (@VP) September 26, 2016