Within hours of of Michael Jackson's death, some of the world's leading athletes used their social networking sites to express their feelings about the King of Pop.

Basketball star Shaquille O'Neal began the outpouring of grief on http://www.athletetweets.com/ by first asking if the rumours of Jackson's deathe were true and then expressing his sadness over the matter.

LA Lakers forward Lamar Odom followed by writing: "my thoughts and prayers go out to Michael Jackson and his family. He is a legend. King of Pop."

US golfer Stewart Cink moved to begin a memorial for Jackson.

"Send me your favorite Michael Jackson moments, memories, etc. We'll let it be a cyber shrine," tweeted Cink.

Below are the sentiments of many other US sports stars with regards to Michael Jackson and Farah Fawcett:

US swimming stalwart and Beijing gold medallist Dara Torres: Omg, 1st Farrah Fawcet, now Michael Jackson...it's a sad day...rip.

Cycling legend Lance Armstrong: Terrible news about Michael Jackson and Farah Fawcett. My best to their friends, fans, and families.

NBA star Dwight Howard: y are people so controversial on here. i am very shocked about mj. i have every song he ever put out. i am shocked and sad.

IndyCar driver Danica Patrick: I can not believe Michael Jackson and Farrah passed away. Rest in peace.

LPGA golfing legend Annika Sorenstam: SAD day. Michael Jackson and Farrah Fawcett. Hope the two global icons rest in peace. Thoughts with their families.