ARLINGTON, Texas (AP) — The Texas Rangers have opened their summer camp in their new home. Their first official workout in their new stadium with a retractable roof came three weeks before they expect to finally play a game there. It was nearly four months after the coronavirus pandemic put a halt to major league spring training. Left-hander Brett Martin was away from the team after he tested positive for COVID-19 during intake testing this week. Martin was already at higher risk because he has Type 1 diabetes. The pitcher had some mild symptoms with congestion and fatigue.