The Nationals placed Gray (elbow) on the 60-day injured list Sunday, Andrew Golden of The Washington Post reports.

Gray (elbow) began a throwing program Monday, Mark Zuckerman of MASNSports.com reports.

Gray agreed to a one-year, $1.35 million contract with the Nationals on Thursday to avoid arbitration, Andrew Golden of The Washington Post reports.

Gray will undergo surgery Wednesday to repair a partial tear of the UCL in his right elbow, Andrew Golden of The Washington Post reports.

Gray (elbow) was transferred to the 60-day injured list Friday, Andrew Golden of The Washington Post reports.

Nationals manager Dave Martinez said Tuesday that the club will wait to send Gray (elbow) for an MRI until around the All-Star break, Spencer Nusbaum of The Washington Post reports.

Gray experienced elbow discomfort and felt more fatigued than normal during Sunday's rehab start at Triple-A Rochester, Andrew Golden of The Washington Post reports. Gray will undergo testing in the coming days.

Manager Dave Martinez said Wednesday that Gray (elbow) will make one or two more rehab starts with Triple-A Rochester, Bobby Blanco of MASNSports.com reports.

Gray (elbow) struck out four and allowed one run on four hits and zero walks over six innings in his rehab start Tuesday with Triple-A Rochester.

Gray (elbow) will make his next rehab start for Triple-A Rochester on Tuesday, Bobby Blanco of MASNSports.com reports.