You can carry 2 black holes, but you need to continue to get superhuman performances from the other 7. Your lineup can hum with 5 guys hitting at or above their career norms, assuming you have a good lineup at baseline. Once you start slipping into a minus territory with more guys slumping than hitting, you start to slump as a team. When you have 2 black holes, you need to have 5 of 7 riding high or else you'll struggle. For now, you've had Xander, Betts, JD, Hanley and Moreland flying high with Devers starting off well and being replaced by Beni in the positive territory. You continue to get 5 or 6 guys hitting at or better than their expectations, you'll be fine. But if JD and Betts slump at the same time, your lineup is going to fail