Hoping to rebound from their loss to the Rams, the Broncos returned home for an AFC duel against the Miami Dolphins &#8212; the Broncos' first home game in exactly one month. The Dolphins grabbed the early lead, with running back Daniel Thomas rushing for a 3-yard touchdown. The Broncos subsequently got on the scoreboard, with a 38-yard field goal by placekicker Brandon McManus. The Dolphins added to their lead early in the second quarter, with quarterback Ryan Tannehill rushing for a 1-yard touchdown. The Broncos cut into the Dolphins' lead, with quarterback Peyton Manning connecting on a 5-yard touchdown pass to wide receiver Demaryius Thomas, however, the Dolphins responded, with Tannehill throwing a 10-yard touchdown pass to wide receiver Mike Wallace. Another touchdown pass from Manning to Demaryius Thomas &#8212; from 14 yards out &#8212; narrowed the Dolphins' lead to 21-17 just before halftime. The Broncos drove to as far as the Dolphins' 7-yard line on the initial possession of the second half, but after Manning was sacked by Dolphins' linebacker Jelani Jenkins for an 8-yard loss, McManus missed on a 33-yard field goal attempt. After the Broncos' defense forced a Dolphins' punt, return specialist Isaiah Burse fumbled deep in Broncos' territory, giving the football back to the Dolphins. Four plays later, Tannehill connected with wide receiver Jarvis Landry on a 5-yard touchdown pass to give the Dolphins a 28-17 lead at the 2:15 mark of the third quarter. The Broncos then reeled off 22 unanswered points. Early in the fourth quarter, Manning threw his third touchdown pass of the game to Demaryius Thomas &#8212; from 5 yards out &#8212; coupled with a two-point conversion pass to wide receiver Emmanuel Sanders. After forcing a Dolphins' punt, the Broncos grabbed their first lead of the game at the 5:05 mark of the fourth quarter, with running back C. J. Anderson rushing for a 10-yard touchdown. On the third play of the Dolphins' next possession, Tannehill was intercepted by Broncos' safety T. J. Ward, who advanced the football all the way to the Dolphins' 8-yard line. Two plays later, Manning threw a 2-yard touchdown pass to wide receiver Wes Welker to increase the Broncos' lead to 39-28 with 3:17 remaining in the fourth quarter. The Dolphins attempted a rally, with Tannehill connecting on a 1-yard touchdown pass to Landry, coupled with running back Lamar Miller rushing for a two-point conversion, with 1:37 remaining in the game. However, the Dolphins' onside kick attempt was unsuccessful, and the Broncos subsequently ran out the clock. Demaryius Thomas' streak of 100-yard receiving games ended at seven games, one shy of the NFL record that was set by Detroit Lions' wide receiver Calvin Johnson in 2012.. How many points were the Dolphins leading by at the end of the first half?