The phrase "to run the clock" means to intentionally waste time or delay something to make it last longer until a specific event or deadline.
Sentences with «to run the clock»
Regular first half, running clock for the second half until 5 minutes then back to normal, said he wants to keep the guys playing well on the same team. (sbnation.com)
All teams will play five games with a 50 minute running clock. (sportstarsmag.com)
As Vesely said, «Being a legal department of one, you need someone you can call who isn't just going to start running the clock on you. (canadianlawyermag.com)