Coin toss before an NFL regular season football game against the Dallas Cowboys and the Denver Broncos on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Denver Broncos nose tackle Domata Peko (94) celebrates during an NFL regular season football game against the Dallas Cowboys and the Denver Broncos on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Denver Broncos enter the field during an NFL regular season football game against the Dallas Cowboys on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Denver Broncos cheerleaders during an NFL regular season football game against the Dallas Cowboys on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Denver Broncos running back Jamaal Charles (28) is tackled during an NFL regular season football game against the Dallas Cowboys on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Denver Broncos quarterback Trevor Siemian (13) throws during an NFL regular season football game against the Dallas Cowboys on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Denver Broncos wide receiver Demaryius Thomas (88) celebrates during an NFL regular season football game against the Dallas Cowboys on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Denver Broncos wide receiver Demaryius Thomas (88) runs after the catch during an NFL regular season football game against the Dallas Cowboys on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Denver Broncos quarterback Trevor Siemian (13) is sacked and fumbles the ball during an NFL regular season football game against the Dallas Cowboys on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Denver Broncos quarterback Trevor Siemian (13) throws during an NFL regular season football game against the Dallas Cowboys on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Denver Broncos outside linebacker Shaquil Barrett (48) tackles Dallas Cowboys running back Ezekiel Elliott (21) during an NFL regular season football game on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Denver Broncos wide receiver Emmanuel Sanders (10) celebrates his touchdown catch during an NFL regular season football game against the Dallas Cowboys on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Dallas Cowboys quarterback Dak Prescott (4) signals during an NFL regular season football game against the Denver Broncos on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Dallas Cowboys quarterback Dak Prescott (4) throws during an NFL regular season football game against the Dallas Cowboys and the Denver Broncos on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Denver Broncos outside linebacker Von Miller (58) sacks Dallas Cowboys quarterback Dak Prescott (4) during an NFL regular season football game against on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Dallas Cowboys running back Ezekiel Elliott (21) runs during an NFL regular season football game against the Denver Broncos on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Denver Broncos running back C.J. Anderson (22) runs during an NFL regular season football game against the Dallas Cowboys on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Denver Broncos cornerback Chris Harris (25) runs after his interception during an NFL regular season football game against the Dallas Cowboys on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Denver Broncos offensive guard Max Garcia (76) celebrates with Denver Broncos quarterback Trevor Siemian (13) during an NFL regular season football game against the Dallas Cowboys on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Denver Broncos outside linebacker Von Miller (58) rushes during an NFL regular season football game against the Dallas Cowboys on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Severe lightning weather warning during an NFL regular season football game against the Dallas Cowboys and the Denver Broncos on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Dallas Cowboys running back Ezekiel Elliott (21) during warm ups before an NFL regular season football game against the Denver Broncos on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Dallas Cowboys quarterback Dak Prescott (4) during warm ups before an NFL regular season football game against the Denver Broncos on Sunday, Sept. 17, 2017 in Denver. (Ric Tapia/NFL)

Dallas Cowboys quarterback Dak Prescott (4) warms up prior to an NFL football game against the Denver Broncos, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Jack Dempsey)

Dallas Cowboys running back Ezekiel Elliott (21) is stopped by Denver Broncos outside linebacker Shaquil Barrett (48), defensive end Derek Wolfe (95) and defensive tackle Adam Gotsis (99) during the first half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Jack Dempsey)

Dallas Cowboys running back Ezekiel Elliott (21) makes a catch as Denver Broncos inside linebacker Brandon Marshall (54) defends during the first half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Jack Dempsey)

Denver Broncos wide receiver Emmanuel Sanders (10) is hit by Dallas Cowboys strong safety Jeff Heath (38), outside linebacker Jaylon Smith (54) and defensive end Charles Tapper (99) during the first half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Jack Dempsey)

Denver Broncos wide receiver Demaryius Thomas (88) runs after the catch for a first down as Dallas Cowboys cornerback Nolan Carroll (24) pursues during the first half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Joe Mahoney)

A Denver Broncos security guard stands on the field during a weather delay during the first half of an NFL football game against the Dallas Cowboys, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Jack Dempsey)

Dallas Cowboys cornerback Anthony Brown (30) celebrates a fumble recovery against the Denver Broncos during the first half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Joe Mahoney)

Dallas Cowboys wide receiver Dez Bryant (88) catches a touchdown pass as Denver Broncos cornerback Aqib Talib defends during the first half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Jack Dempsey)

Denver Broncos head coach Vance Joseph argues with umpire Butch Hannah (40) during the first half of an NFL football game against the Dallas Cowboys, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Jack Dempsey)

Denver Broncos quarterback Trevor Siemian (13) throws against the Dallas Cowboys during the first half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Joe Mahoney)

Dallas Cowboys wide receiver Dez Bryant (88) falls in the end zone after scoring a touchdown against the Denver Broncos during the first half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Joe Mahoney)

Denver Broncos wide receiver Emmanuel Sanders (10) celebrates his touchdown against the Dallas Cowboys during the first half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Joe Mahoney)

Denver Broncos wide receiver Emmanuel Sanders (10) scores a touchdown against the Dallas Cowboys during the first half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Joe Mahoney)

Denver Broncos wide receiver Emmanuel Sanders (10) celebrates his touchdown against the Dallas Cowboys during the first half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Joe Mahoney)

Dallas Cowboys wide receiver Cole Beasley (11) can't hold on as Denver Broncos cornerback Chris Harris (25) knocks him out of bounds during the first half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Jack Dempsey)

Dallas Cowboys kicker Dan Bailey (5) kicks a field goal as punter Chris Jones (6) holds against the Denver Broncos during the first half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Jack Dempsey)

Dallas Cowboys quarterback Dak Prescott (4) throws against the Denver Broncos during the first half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Joe Mahoney)

Denver Broncos tight end Virgil Green (85) scores a touchdown as Dallas Cowboys cornerback Jourdan Lewis pursues during the second half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Joe Mahoney)

Denver Broncos cornerback Chris Harris (25) intercepts a pass intended for Dallas Cowboys wide receiver Dez Bryant (88) during the second half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Jack Dempsey)

Denver Broncos running back C.J. Anderson (22) falls into the end zone for a touchdown as Dallas Cowboys strong safety Jeff Heath (38) defends during the second half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Jack Dempsey)

Denver Broncos running back C.J. Anderson (22) celebrates his touchdown against the Dallas Cowboys during the second half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Jack Dempsey)

Denver Broncos tight end Virgil Green (85) celebrate his touchdown with offensive tackle Menelik Watson during the second half of an NFL football game against the Dallas Cowboys, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Joe Mahoney)

Dallas Cowboys quarterback Dak Prescott(4) throws as Denver Broncos outside linebacker Von Miller pursues during the second half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Joe Mahoney)

Dallas Cowboys tight end Jason Witten (82) falls into the end zone for a touchdown against the Denver Broncos during the second half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Jack Dempsey)

Dallas Cowboys cornerback Jourdan Lewis (27) intercepts a pass against the Denver Broncos during the second half of an NFL football game, Sunday, Sept. 17, 2017, in Denver. (AP Photo/Jack Dempsey)