Suggested by Random Diavolo won’t stand a chance against someone like Goku. Let me put it this way, Goku is in the top tier among all fighters when it comes to both speed and strength. He can destroy whole universes with a single blast. That’s the kind of power that will scare anyone and this includes Diavolo. He has no means of defending himself here. While deleting 10 seconds of time and seeing the future is handy, Goku is too strong for this to affect him. He can also keep up his Kamehameha for over 10 seconds and the instant it lands then it’s game over. Goku wins.