(AP Photo/Jason E. Miczek, File)
Jason Day wants to get back to No. 1 in the world, and he's willing to lose sleep over it.
"There has to be some kind of sacrifice," Day said in the Bahamas before shutting it down for the year. "I was reading the Kobe Bryant book, and he knew there was something he had to sacrifice, so he sacrificed sleep. Because he couldn't sacrifice family, he couldn't sacrifice competing, and not working.
"What can I sacrifice?" he added with a smile. "Sleep."