By Andrew Holleran A pre-shot routine in golf is important, as it allows the player to relax and get into the right frame of mind before hitting. Paige Spiranac showed off hers on Instagram this week. The former professional golfer, who played collegiately at the University of Arizona and San Diego State University, has fun with hers. Unsurprisingly, the pre-shot routine from the social media sensation is going viral. “A pre shot routine is very important to the improvement of your golf game and to show off your butt unnecessarily on IG,” she joked. View this post on Instagram A post shared by…