Michael Crabtree, Tarvaris Jackson visit Dolphins

The Dolphins huddled with the top unsigned wide receiver on Thursday. San Francisco’s Michael Crabtree took a free agent visit to Miami, as did Seahawks reserve quarterback Tarvaris Jackson, the Dolphins announced this evening. Crabtree, 27, hauled in 68 passes for 698 yards and four touchdowns for the 49ers last season. He is PFT’s highest-ranked…