The 60-day injured list (known as the 60-day disabled list until the end of the 2018 season) is the longest of the three injured lists in Major League Baseball. Players placed on the 60-day injured must remain on it 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 injured longer than 60 days rather than being transferred to the 60-day injured list. 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.
After the 2018 season, the 7-day disabled list (or "DL"), 10-day disabled list and 60-day disabled list were renamed, becoming the 7-day injured list, the 10-day injured list and the 60-day injured list.
The decision to change the 15-day injured list to the 10-day injured list after the 2016 season did not affect the parameters of the 7-day injured list or the 60-day injured list.