I used to be run out at all costs, until I got involved in BCA leauge. My team mates tried to convince me "safeties win games". I didn't believe them, until, when we practiced, they would safe me every single chance they got and let me kick. To say I got frustrated is an understatement. After a lot of ass kickings and frustration I figured out they were right. Even though I was a much better player (at pocketing balls and pulling shape) than they were, they beat me into submission. All that ball pocketing skill doesn't do you much good when you are locked on a ball with no real shot.
Another example is a current team member. His head is harder than a block of concrete. I noticed after several months that he had "adjusted" his style of play and commented to a mutual friend. He stated "yeah, he got tired of you guys beating the crap out of him ever time you practiced". We would "punish" him with safes, especially if he got down to only having one or two balls on the table.
I would suggest you do the same to your team mate. Pain is a great motivator, the pain of getting your ass handed to you almost every game.