Although, Morrow might not be the closer for a while, so you might rank Qualls ahead of Morrow in this case.
The two expendable players on your team are:
Randy Johnson and Ethier.
I would probably drop Ethier first personally. Even if one of your OF is injured (Guerrero), Pence is a great back up, and in a 10 team league, there may be a better option than Ethier a month into the season. I'd hold onto Randy and give him a few weeks to see if he picks up at the 2.5-3.0 ERA he left off w/ last year, or comes out w/ a 4.0+ ERA.
check out mine: viewtopic.php?f=26&t=376632