Triston Casas, the Red Sox first baseman, has received positive news from an MRI confirming his left rib cage injury has healed. Casas, who has been sidelined since April 20, has begun swinging again and is optimistic about his return, potentially in 2-3 weeks around the All-Star Break. Despite his absence, Casas has been maintaining his fitness with other baseball activities. Alex Cora, the Red Sox manager, is hopeful that Casas can return by the series against the Marlins starting July 2. Prior to his injury, Casas was performing well with a .244 average, six home runs, and an .857 OPS. His return is expected to significantly boost the Red Sox lineup as they aim for a playoff spot.