Fantasy baseball analyst Dalton Del Don scans for save sources and provides updates to unsettled or intriguing bullpens.
Arizona Diamondbacks
Justin Martinez seemingly solidified his role as Arizona’s closer after A.J. Puk went on the IL, but Martinez’s status should be monitored after he was unavailable Sunday due to “fatigue.” He ranks third in SIERA (1.06) and eighth in CSW (36.3) among 215 qualified relievers, and Puk is sidelined with left elbow inflammation. Martinez can be a top 10 (if not top five) fantasy closer if he’s good to go.
Boston Red Sox
Aroldis Chapman remains effective and the favorite for saves in Boston, but he’s been used in high-leverage situations during the Red Sox’s last two wins.