That's a lot of injuries to key Chelsea players and this is likely going to affect the team's performance in their next game having got this number of players injured who are yet to recover. Starting up the season with so many injuries has the possibility of denying them the top 4 spots, looking at how competitive it was last season. It is needful for the coach to step up his game to get Chelsea into the promised Land.
To some extents; i think the injuries are something that the Chelsea coach should have expected because it is a known fact that the injured players are injury prone (bar Nkunku, Badiashile and Chukweumeka) and are not reliable too. But instead the ownership has spent without addressing the key issue.
I still believe that Pochetino will do a good job; and should yes make use of the depth of players available at his disposal.