Pirates rookie shortstop Konnor Griffin's right forearm strain shows improvement, with the 20-year-old hopeful of starting a throwing program soon. Griffin felt discomfort after a May 27 loss to the Cubs and was placed on the 10-day injured list four days later. Though eligible to return Wednesday, his comeback remains indefinite after medical evaluation revealed a more severe injury than initially expected.

The former first-round pick was hitting .270 with four homers, 22 RBI and 14 stolen bases when hurt. Director of sports medicine Todd Tomczyk confirmed imaging showed Griffin's UCL remains stable, offering optimism for a relatively quick recovery. Multiple physicians evaluated the injury, suggesting the organization is taking proper precautions with their prized prospect.

Griffin emphasized being proactive about the issue, noting he'd never previously had arm problems. His nine-year contract extension signed shortly after his April debut underscores Pittsburgh's long-term investment in the teenager. The Pirates need his speed and offensive production as they navigate the season's second half.

With the injury caught early, Griffin expects only a brief absence rather than a season-ending setback. His return timeline will become clearer after meeting with the medical team in coming days.