Murray not be a “Yes” type to me as a coach! Lendl is not either! I guess it could work! Lendl making a comeback to ATP Tour! He could get into most of the ATP Tour main draw as a WC since he won the tournaments not once but several times, GS too! Maybe he could not win Wimbledon or was it the U.S. Open But still give him a WC for being finalist for numerous times! Murray is his manager, coach! LOL!
As others have said, I'm probably wrong here, but Lendl strikes me as the kind of beer-bellied middle aged dude who can still give you a run for your money. Even if he's out of shape, he's not physically impaired.