Nationals manager Dave Martinez said Friday that Doolittle (elbow) has begun throwing bullpen sessions, Bobby Blanco of MASNSports.com reports.

EDGE Analysis

The hope is that Doolittle can advance to live batting practice sessions sometime next week and begin a minor-league rehab assignment soon after. He's on track to join the Nationals' bullpen around late April or early May coming off surgery last July to repair a partial tear of the UCL in his left elbow.