Runs? Opening bat will miss a century, I'll say! (6)
I believe the answer is:
rather
I'm afraid I can't even guess how this answer relates to the clue.
Can you help me to learn more?
(Other definitions for rather that I've seen before include "Infinite time" , "Quite, sort of" , "Somewhat; more willingly" , "Yes, please!" , "somewhat > sooner? > Quite" .)