Derby (shoulder) didn't practice Wednesday, Zac Stevens of BSNDenver.com reports.
The same applies to fellow tight end Jeff Heuerman (knee), but neither looks like a high-percentage fantasy option in Week 11, even if either suits up. Derby, who was forced out of Sunday's game against the Patriots in the third quarter, has been held to one catch in two straight games while totaling just 13 receiving yards in that span.