The 60-day disabled list -- or "DL" -- is the longest of the three disabled lists in Major League Baseball. Players placed on the 60-day DL must remain on the DL for a minimum of 60 days and are temporarily removed from a club's 40-man roster, which often makes the list a last resort for clubs.
If a club doesn't need a 40-man roster spot to replace an injured player, the player may be kept on the 10-day DL longer than 60 days rather than being transferred to the 60-day DL. That way, the club won't need to risk losing another player by going through the process to clear a spot on the 40-man roster when the injured player is ready to return. Under the 2017-21 Collective Bargaining Agreement, the 10-day DL replaced the 15-day DL as the shortest DL option for non-concussion injuries.
After swinging a trade to acquire right-hander Matt West in May 2015, the Los Angeles Dodgers cleared a 40-man roster spot by transferring left-hander Hyun-Jin Ryu from the 15-day DL to the 60-day DL. Ryu had opened the year with a shoulder injury and would ultimately undergo season-ending surgery later that month.
Note: The information contained in this glossary entry is subject to change as details emerge.