However , he acknowledged that a lot of golf had not been played during part of that time .
He knows there are challengers who want to get back to No. 1 , like Rory McIlroy and Jason Day .
However , he acknowledged that a lot of golf had not been played during part of that time , and he knows there are challengers who want to get back to No. 1 , like Rory McIlroy and Jason Day .