Tannehill, a rookie, had one of his worst showings of his young career. He completed 23-of-39 passes for 217 yards. He didn't throw a touchdown but had three interceptions.
On the season, Tannehill has completed 59 percent of his passes for 1,979 yards and five touchdowns. He's thrown nine interceptions. His three-interception day was his second of his career. The first was in his NFL debut against the Houston Texans on Sept. 9.
Hartline was Tannehill's favorite target Sunday. He was targeted 10 times, caught eight passes and had 79 yards.
Hartline, a fourth-round draft pick in 2009, has had a breakout season in Miami. He's caught 49 passes for 741 yards and a touchdown.
The Dolphins (4-5) travel to play division rival Buffalo (3-6) on Thursday.