Caleb Douglas made his NFL debut on Sunday. He and Chris Bell started at wide receiver for the Miami Dolphins in the opener against the Las Vegas Raiders. Douglas had a rough start. Later, Malik Willis connected with him for a 25-yard gain. The Dolphins held their most experienced receiver back for the opener. That put the receiving work in young hands. The team used a youthful receiving group. That group was seen as a likely waiver-wire target in advance of the opener. The young group faced extra attention. Analysts said the rookie group might set a mark as rookie receivers. Douglas's only reception went on the books for 25 yards.