PM'd my team name to you RJB.
I think I figured out which team you are. My team is the Ticomaniacs!!!. RJB's team name is the Tico Terminators ... which is cute, and outrageously optimistic.
If you look on the League page, and look at "Recent Transactions," you can see that earlier today RJB (Tico Terminators) dropped Scooter Gennett, who is presently injured ("DTD" means he is injured and "day to day"). As I recall (going off memory here), if a player is DTD they cannot be put on your team's DL list. Only if Scooter's real life team put him on the real life DL list, could RJB have put him on his fantasy DL list.
If you click on the yellow icon just to the right of the DTD, that will show recent stats and news for that player. Looks like Scooter is going to miss 2-3 months due to a groin strain, so RJB kicked him off of his team. He is undoubtedly planning to pick up another player off waivers. He could have dropped Scooter at the time of the waiver pickup, as part of that waiver transaction, or he can drop him now. Either way works the same, really. To drop a player you go to your team's page, and look for the "Drop Player" button.