With the Broncos trailing 10-0 midway through the second quarter, Thomas leaped over Janoris Jenkins to haul in a 40-yard pass from Siemian on third down that set the Broncos up at the Giants' 10-yard line.
Sullivan, whose only other game calling Giant plays had been the final preseason game this summer in New England, guided the Giants on a 13-play, 69-yard drive on their first possession capped by the first of three Aldrick Rosas field goals.
The Giants were 13.5-point underdogs to the Denver Broncos. Watson was ruled out with a calf injury. In addition, the Broncos receivers kept going down to injury, including Emmanuel Sanders, who had to be carted off with an ankle injury.
Offensive line coach Mike Solari joined in the gushing about Miller. It's a massive change that many had been demanding for weeks. On the Broncos' next series, Siemian had the ball poked out of his hands by NY pass-rusher Jason Pierre-Paul.
Janoris Jenkins and the rest of the New York Giants defense had to step up on Sunday night, especially after the team lost almost all of its offensive weapons the week before. Odell Beckham Jr., Brandon Marshall and Dwayne Harris all were placed on injured reserve last week after going down with season-ending injuries. This one with (from left to right) Ereck Flowers, John Jerry, Brett Jones, D.J. Fluker and Justin Pugh worked. Orleans Darkwa gained nearly that many on one run in the second quarter when he knifed right up the middle and wasn't pulled down until safety Justin Simmons caught up with him 47 yards later. And with the Broncos trailing by three scores in the fourth quarter, the rushing attack was officially grounded.
Engram is third on the team with 200 yards on 19 receptions.
Darkwa finished with 117 yards, the most this season against Denver.
The Giants finish 2017 with the same record as 2016, so it doesn't look like their offseason moves have improved the team any.
"When you have three turnovers, it's hard to say he played well", Broncos coach Vance Joseph said.
The thing is, the Giants couldn't score, even with OBJ. Siemian missed the last seven plays of the first half as he was checked by the team's medical staff, but returned in the second half. His 43-yard interception return for a touchdown with 48 seconds left before halftime gave NY a two-touchdown cushion and left Siemian writhing in pain.
Cornerback Eli Apple also had his best game of the season after struggling early and being benched last week.
We learned a lot about a team that hadn't shown much in the first five games.
The league's top red zone defense previous year produced a goal-line stop and allowed one late touchdown.
Following a loss earlier Sunday by the Oakland Raiders and Kansas City Chiefs, the Broncos had an opportunity coming off of their bye week to gain some more ground in the AFC West battle as they took on the win-less Giants.