Orioles manager Brandon Hyde said Wednesday that Hays is still dealing with lingering effects from his left calf injury, Jake Rill of MLB.com reports.

The Orioles reinstated Hays (calf) from the 10-day injured list Monday.

Hays (calf) will begin a rehab assignment with Double-A Bowie on Tuesday, Jake Rill of MLB.com reports.

Hays will work out with Double-A Bowie this weekend but it's unclear when his rehab assignment will start, Jacob Calvin Meyer of The Baltimore Sun reports.

Hays (calf) said that he's been able to engage in a running program the past few days and plans to hit Thursday, Roch Kubatko of MASNSports.com reports.

Orioles manager Brandon Hyde said Monday that Hays (calf) is showing improvement, but the outfielder has yet to take part in much physical activity since landing on the 10-day injured list April 22, Danielle Allentuck of TheBaltimoreBanner.com reports.

Hays said Friday that he will test out his left calf strain with some running in a couple days, Roch Kubatko of MASNSports.com reports.

Hays (calf) was placed on the 10-day injured list Monday.

Hays is out of the lineup for Sunday's game against the Brewers, Roch Kubatko of MASNSports.com reports.

Hays is out of the lineup for Wednesday's game against the Red Sox.