Kyle McClellan has been diagnosed with a strained right lat muscle. The recovery period for such an injury is typically around 3-4 weeks, according to Fort Worth Star-Telegram reporter Jeff Wilson. It's a costly setback for the 28-year-old right-hander, whose Cactus League debut was delayed with right shoulder soreness. McClellan was hopeful he could win a spot in the Rangers rotation heading into spring, but this injury all-but-guarantees he starts the season on the disabled list.