Wat .... seriously? Please tell me you're not that dumb.
A three run lead in the ninth, the 4th and 5th run can't score without getting him past home plate. Makes no difference if he is on first or already home.. Other than the chance of being able to double him up, which is pretty low when we're likely to give him 2nd base for free anyway. Put the ball into play and it's something like a 2 thirds chance of getting him out. Walk him and you have no chance of an out.