Texas Rangers players Ronald Guzman and Nomar Mazara left yesterday’s game against the San Diego Padres prematurely due to injuries — Guzman due to banging his head into the knee of third baseman Christian Villanueva, putting him in concussion protocol and Mazara due to tweaking his hamstring beating out an infield single. Neither injury appears serious enough that either player will need to miss a significant amount of time, but the Rangers may be forced to make a roster move before today’s game due to roster construction issues.