Brady struggles in Patriots season opener against Kansas City

(Reuters) - Tom Brady lacked his usual dominance in his first game as a 40-year-old, failing to throw a touchdown pass as his New England Patriots fell 42-27 to the Kansas City Chiefs in the NFL's season opener on Thursday.

Brady, who became the 20th quarterback to play in an NFL game after his 40th birthday, had a quick start but ultimately seemed out of sync with the slew of offensive playmakers the reigning Super Bowl champions added during the offseason.

The future Hall of Famer was sacked three times and only completed 16 of 36 pass attempts for 267 yards in front of a crowd that was left in a state of disbelief only hours after a championship banner was unfurled during a raucous pregame ceremony.

RELATED: New England Patriots fall to Kansas City in NFL season opener

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New England Patriots fall to Kansas City in NFL season opener
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New England Patriots fall to Kansas City in NFL season opener
FOXBORO, MA - SEPTEMBER 07: Tom Brady #12 of the New England Patriots reacts on the bench during the second half against the Kansas City Chiefs at Gillette Stadium on September 7, 2017 in Foxboro, Massachusetts. (Photo by Maddie Meyer/Getty Images)
Sep 7, 2017; Foxborough, MA, USA; Kansas City Chiefs tight end Travis Kelce (87) celebrates a fourth quarter touchdown by running back Kareem Hunt (27) (not pictured) at Gillette Stadium. Mandatory Credit: Greg M. Cooper-USA TODAY Sports
Sep 7, 2017; Foxborough, MA, USA; New England Patriots running back Mike Gillislee (35) celebrates after scoring a touchdown against the Kansas City Chiefs with center David Andrews (60) and fullback James Develin (46) during the first quarter at Gillette Stadium. Mandatory Credit: David Butler II-USA TODAY Sports
Sep 7, 2017; Foxborough, MA, USA; Kansas City Chiefs wide receiver De'Anthony Thomas (13) runs with the ball against New England Patriots free safety Devin McCourty (32) at Gillette Stadium. Mandatory Credit: Greg M. Cooper-USA TODAY Sports
FOXBORO, MA - SEPTEMBER 07: Rob Gronkowski #87 of the New England Patriots sits on the sideline during the first half against the Kansas City Chiefs at Gillette Stadium on September 7, 2017 in Foxboro, Massachusetts. (Photo by Maddie Meyer/Getty Images)
Sep 7, 2017; Foxborough, MA, USA; New England Patriots running back Mike Gillislee (35) scores a touchdown during the second quarter at Gillette Stadium. Mandatory Credit: Greg M. Cooper-USA TODAY Sports
Sep 7, 2017; Foxborough, MA, USA; Kansas City Chiefs running back Kareem Hunt (27) runs the ball in for a touchdown in front of New England Patriots strong safety Jordan Richards (37) and cornerback Malcolm Butler (21) at Gillette Stadium. Mandatory Credit: David Butler II-USA TODAY Sports
FOXBORO, MA - SEPTEMBER 07: Tom Brady #12 of the New England Patriots is sacked during the second half against the Kansas City Chiefs at Gillette Stadium on September 7, 2017 in Foxboro, Massachusetts. (Photo by Adam Glanzman/Getty Images)
FOXBORO, MA - SEPTEMBER 07: New England Patriots defensive coordinator Matt Patricia reacts on the sideline during the game against the Kansas City Chiefs at Gillette Stadium on September 7, 2017 in Foxboro, Massachusetts. (Photo by Maddie Meyer/Getty Images)
FOXBORO, MA - SEPTEMBER 07: Tyreek Hill #10 of the Kansas City Chiefs celebrates on his way to scoring a touchdown during the third quarter against the New England Patriots at Gillette Stadium on September 7, 2017 in Foxboro, Massachusetts. (Photo by Maddie Meyer/Getty Images)
Sep 7, 2017; Foxborough, MA, USA; Kansas City Chiefs running back Kareem Hunt (27) dives for a touchdown against New England Patriots outside linebacker Kyle Van Noy (53) at Gillette Stadium. Mandatory Credit: Greg M. Cooper-USA TODAY Sports
FOXBOROUGH, MA - SEPTEMBER 7: Kansas City Chiefs running back Kareem Hunt (27) leaves New England Patriots defensive end Cassius Marsh (55) in his wake as he runs for a fourth quarter touchdown. The New England Patriots host the Kansas City Chiefs in the NFL regular season football opener at Gillette Stadium in Foxborough, MA on Sep. 7, 2017. (Photo by Barry Chin/The Boston Globe via Getty Images)
FOXBORO, MA - SEPTEMBER 07: Tom Brady #12 of the New England Patriots reacts after being sacked during the second half by the Kansas City Chiefs defense at Gillette Stadium on September 7, 2017 in Foxboro, Massachusetts. (Photo by Maddie Meyer/Getty Images)
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For Brady, who is well past the age when quarterbacks tend to be much less efficient, it marked only the 14th time during his career that he completed less than 50 percent of his passes.

At one point, with the Patriots deep in Chiefs territory and looking to pad their 24-21 lead late in the third quarter, Brady was called for an illegal forward pass when he threw from beyond the line of scrimmage, forcing them to settle for a field goal.

It marked the first illegal pass thrown by Brady since 2006.

Despite Brady's struggles, the Patriots were only down by six points when the fourth quarter started and there was plenty of reason to believe he would find a way to pull off the win having engineered many late-game comebacks in his career.

But Brady, who led New England on a record-setting comeback last February to win a fifth Super Bowl, was unable to find any rhythm in the second half, which was made all the more difficult after losing wide receiver Danny Amendola to a head injury.

Amendola was Brady's top-targeted receiver at the time he left the game, hauling in six catches for 100 yards.

Brady did well to get New England in front as he led them down the field on the game's opening drive, which was capped by the first of three rushing touchdowns from Mike Gillislee, who was making his Patriots debut after signing with the team in April.

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Brady then hit Rob Gronkowski for a 20-yard touchdown pass but the reception was ruled incomplete upon official review and the Chiefs tied the game on the next series when Alex Smith tossed one of his four touchdown passes in the game.

The Patriots opened the season as a popular pick to repeat as Super Bowl champions, a feat that has not been accomplished since they did it in the 2004 season.

They next play at New Orleans on Sept. 17.

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Every NFL team's Super Bowl 52 odds

New York Jets

Super Bowl odds: 5000/1

Last updated 9/21

(Photo by Al Pereira/Getty Images)

Cleveland Browns

Super Bowl odds: 1000/1

Last updated 9/21

(Photo by: 2017 Nick Cammett/Diamond Images/Getty Images)

San Francisco 49ers

Super Bowl odds: 500/1

Last updated 9/21

(Photo by Michael Zagaris/San Francisco 49ers/Getty Images)

Chicago Bears

Super Bowl odds: 500/1

Last updated 9/21

(Photo by Robin Alam/Icon Sportswire via Getty Images)
Indianapolis Colts

Super Bowl odds: 250/1

Last updated 9/21

(Photo by Zach Bolinger/Icon Sportswire via Getty Images)
Los Angeles Rams

Super Bowl odds: 150/1

Last updated 9/21

(Photo by Harry How/Getty Images)
Cincinnati Bengals

Super Bowl odds: 150/1

Last updated 9/21

(Photo by Ian Johnson/Icon Sportswire via Getty Images)
Buffalo Bills

Super Bowl odds: 125/1

Last updated 9/21

(Photo by Rich Graessle/Icon Sportswire via Getty Images)

New Orleans Saints

Super Bowl odds: 125/1

Last updated 9/21

(Photo by Stephen Lew/Icon Sportswire via Getty Images)

Jacksonville Jaguars

Super Bowl odds: 100/1

Last updated 9/21

(Photo by David Rosenblum/Icon Sportswire via Getty Images)

Los Angeles Chargers

Super Bowl odds: 100/1

Last updated 9/21

(Photo by Leon Bennett/Getty Images)

Washington Redskins

Super Bowl odds: 75/1

Last updated 9/13

(Photo by Jonathan Newton/The Washington Post via Getty Images)

Miami Dolphins

Super Bowl odds: 66/1

Last updated 9/21

(Photo by Joel Auerbach/Getty Images)

Arizona Cardinals

Super Bowl odds: 50/1

Last updated 9/21

(Photo by Stephen Dunn/Getty Images)

New York Giants

Super Bowl odds: 50/1

Last updated 9/21

(Photo by Jonathan Daniel/Getty Images)

Philadelphia Eagles

Super Bowl odds: 40/1

Last updated 9/21

(Photo by Kyle Ross/Icon Sportswire via Getty Images)
Houston Texans

Super Bowl odds: 40/1

Last updated 9/21

(Photo by Scott Halleran/Getty Images)

Tennessee Titans

Super Bowl odds: 33/1

Last updated 9/21

(Photo by Ronald C. Modra/Sports Imagery/ Getty Images)

Baltimore Ravens

Super Bowl odds: 33/1

Last updated 9/21

(Photo by Michael Hickey/Getty Images)

Minnesota Vikings

Super Bowl odds: 33/1

Last updated 9/21

(Photo by Hannah Foslien/Getty Images)

Tampa Bay Buccaneers

Super Bowl odds: 28/1

Last updated 9/21

(Photo by Don Juan Moore/Getty Images)

Detroit Lions

Super Bowl odds: 25/1

Last updated 9/21

(Photo by Jonathan Ferrey/Getty Images)
Carolina Panthers

Super Bowl odds: 22/1

Last updated 9/21

(Photo by Joe Robbins/Getty Images)
Denver Broncos

Super Bowl odds: 18/1

Last updated 9/21

(Photo by John Leyba/The Denver Post via Getty Images)

Kansas City Chiefs

Super Bowl odds: 14/1

Last updated 9/21

(Photo by Scott Winters/Icon Sportswire via Getty Images)

Dallas Cowboys

Super Bowl odds: 14/1

Last updated 9/21

(Photo by Jayne Kamin-Oncea/Getty Images)

Green Bay Packers

Super Bowl odds: 10/1

Last updated 9/21

(Photo by Todd Kirkland/Icon Sportswire via Getty Images)

Atlanta Falcons

Super Bowl odds: 10/1

Last updated 9/21

(Photo by Leslie Plaza Johnson/Icon Sportswire via Getty Images)

Oakland Raiders

Super Bowl odds: 9/1

Last updated 9/21

(Photo by Donald Miralle/Getty Images)

Seattle Seahawks

Super Bowl odds: 9/1

Last updated 9/21

(Photo by Steve Dykes/Getty Images)

Pittsburgh Steelers

Super Bowl odds: 8/1

Last updated 9/21

(Photo by Patrick Smith/Getty Images)

New England Patriots

Super Bowl odds: 4/1

Last updated 9/21

(Photo by Rich Graessle/Icon Sportswire via Getty Images)

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(Reporting by Frank Pingue in Toronto; Editing by Amlan Chakraborty)

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