Bills vs. Bears Preseason Week 1 Live In-Game Updates: Chicago Leads 6-3 At Half

After a long offseason, the Buffalo Bills finally play televised football for the first time since January when they open up their preseason against the Chicago Bears on Saturday.

Although it is still preseason, coach Sean McDermott has confirmed that Josh Allen and the starting group will begin the game on the field and play for about a quarter before the team's backups take over.

Chicago coach Matt Eberflus also confirmed that Bears quarterback Caleb Williams will make his NFL preseason debut in the game and play multiple series.

After multiple departures in the offseason, fans will get their first peek at the team's new-look offense, with a receiving corp expected to be led by returning veteran Khalil Shakir.

One player to watch throughout the game is rookie receiver Keon Coleman. Since Coleman was placed on the second-team in the team's first depth chart release, he should get some action in the game past when the starters are off the field.

Another player to keep an eye on is rookie running back Ray Davis, who will be competing for the backup spot behind James Cook. Davis has been praised for his ability to run through contact, but has struggled with some ball security problems so far throughout camp.

On defense, the safeties will be another position group to watch as the Bills have suffered multiple injuries at the position, and are looking for some players to step up.

Related: Will Josh Allen Play in Bills' Preseason Opener?

While there are plenty storylines to watch, preseason games are a time for players that haven't received much attention to make themselves known, so expect multiple players to step up to try to earn a roster spot.

Live updates will appear here after kickoff...

Chicago wins the toss and elects to receive.

FIRST QUARTER: Bears 6, Bills 0

Tyler Bass kicks off into the end zone for a touchback.

Williams hands the ball off to D'Andre Swift on first down for a three-yard gain. Ed Oliver is shaken up on the play and walks off the field. PENALTY CHI - D. WRIGHT, OFFENSIVE HOLDING, 10 YARD PENALTY. On second down, Williams hands the ball off to Khalil Herbert, who picks up five. On 3rd-and-12, Williams completes a pass to DJ Moore for a 12-yard gain and a first down.

On first down, Williams dumps the ball off to Swift for a 40 yard gain to the BUF 18.

Williams tosses a screen to Herbert on first down for a gain of seven. Herbert runs for two more yards on second down. On 3rd-and-1 from the BUF 9, Herbert is tackled for a loss by Rasul Douglas.

Field Goal Bears: Cairo Santos 29-yard field goal attempt is GOOD. Chicago leads 3-0 with 10:07 remaining in first quarter.

Santos kicks off to KJ Hamler, who returns the ball to the Buffalo 29.

James Cook takes the handoff and gains one yard. On the next play, Allen finds Khalil Shakir for a seven yard gain. On 3rd-and-2 from the BUF 37, Cook loses two yards. Sam Martin punts 62 yards on fourth down and Buffalo downs the ball at the CHI 3.

Buffalo's first-team defense is now off the field for the second drive.

Herbert rushes for two on first down. On second down, Herbert gains two more. On 3rd-and-6 at the CHI 7, Williams pass is incomplete. PENALTY BUF - D. Williams, ILLEGAL CONTACT, 5 YARDS, AUTOMATIC FIRST DOWN

On first down at CHI 12, Williams finds Moore for a 15 yard gain.

At the CHI 41, Williams finds tight end Cole Kmet deep for a 26 yard gain to the BUF 33.

On first down, Williams pass is incomplete. Herbert rushes for just one yard on second down. On 3rd-and-9 from the BUF 32, Williams scrambles up the middle for a 13 yard gain and a first down.

Herbert rushes to the left side for one yard. Williams throws an incompletion on second down looking for Odense. On 3rd-and-9 from the BUF 18, Williams throws the ball away to bring up fourth down. On fourth down, PENALTY BUF - A. EPENESA, DEFENSIVE OFFSIDE, 5 YARD PENALTY.

Field Goal Bears: Santos 31-yard field goal attempt is GOOD. Chicago leads 6-0 with 2:16 remaining in first quarter.

Caleb Williams is 4/7 for 95 passing yards and 13 rushing yards through two series.

Santos kicks off to BUF 5. Hamler muffs catch, recovers, and takes the ball to the BUF 17.

On first down, Allen finds Samuel for 15 yards and a first down at the BUF 32.

Cook takes the handoff for four yards. Allen's pass is incomplete on second down. On 3rd-and-6 from the BUF 36, Allen scrambles for seven yards and a first down.

On first down, Cook stumbles and loses one yard to the BUF 42.

END OF THE FIRST QUARTER

SECOND QUARTER: Bears 6, Bills 3

To begin the second quarter, Allen's day is done. Mitch Trubisky is in at QB for Buffalo.

On second down, Trubisky finds Knox for a gain of seven. On 3rd-and-4 from the BUF 49, Trubisky pass is complete to Shakir for two yards, fourth down. Buffalo stays on field for 4th-and-2. Trubisky pass is complete to Shakir for a gain of 19 to CHI 30.

On first down, rookie Ray Davis takes the handoff for a gain of two. Davis gains two more on second down. On 3rd-and-6 from CHI 26, Trubisky finds Keon Coleman for a gain of eight and a first down.

On 1st-and-10 from the CHI 18, Davis rushes for no gain. Trubisky second down pass is incomplete, intended for Morris. PENALTY CHI - D. HARDY, NEUTRAL ZONE INFRACTION, 5 YARDS. On 3rd-and-5, Trubisky finds Samuel for a gain of eight and a 1st-and-goal for Buffalo.

On first down from the CHI 5, Davis rushes for no gain. Trubisky pass intended for Coleman is incomplete. On 3rd-and-goal from CHI 5, Trubisky pass is incomplete, intended for Coleman.

Field Goal Bills: Tyler Bass 23-yard field goal attempt is GOOD. Bears lead 6-3 with 9:15 remaining in second quarter.

Bass kicks off into the Chicago end zone for a touchback.

Caleb Williams's day is now done, as Tyson Bagent has come in at QB for Chicago.

On first down from the CHI 30, Bagent finds Carlson for a gain of three. PENALTY CHI - FALSE START, 5 YARDS. On 2nd-and-12, Bagent finds Sweeney for a five yard gain. On 3rd-and-8 from CHI 32, Bagent pass is incomplete. PENALTY BUF - DEFENSIVE OFFSIDE, 5 YARDS, DECLINED. PENALTY BUF - K. WILLIAMSON, UNNECESSARY ROUGHNESS, 15 YARDS, ACCEPTED, FIRST DOWN.

With the ball at the CHI 47, Homer rushes for a two yards. Bagent is sacked for a loss of two on second down by Dorian Williams. On 3rd-and-11 from CHI 46, Bagent escapes a sack and completes a sideline pass to Carlson for 18 yards and a first down.

Sean McDermott is challenging the ruling on the field of a catch. The play is currently being reviewed.

After review, the ruling on the field of a catch is REVERSED, it is now 4th-and-11 for Chicago at the CHI 46.

Taylor punts 48 yards to BUF 6. Hamler returns the punt to BUF 21.

On first down, Trubisky pass is complete to Davis for no gain. Trubisky finds Shavers on second down for an 11-yard gain and a first down.

PENALTY BUF - ILLEGAL FORMATION, 5 YARDS, REPLAY FIRST DOWN. On 1st-and-15, Trubisky pass is incomplete. Trubisky scrambles for seven yards on second down to BUF 33. On 3rd-and-8, Trubisky is sacked for a five yard loss, fourth down.

Martin punts short 35 yards to CHI 37, ball is downed there by Ferguson.

Homer rushes for four yards to CHI 41.

TWO-MINUTE-WARNING

PENALTY BUF - NEUTRAL ZONE INFRACTION, 5 YARDS, SECOND DOWN. On 2nd-and-1, Homer rushes for one yard and picks up the first down.

At the CHI 47, Bagent finds Carlson for a gain of five. Bagent pass on second down is incomplete, intended for Carter. On 3rd-and-5 from the BUF 48, Bagent pass is incomplete. PENALTY CHI - T. BAGENT, INTENTIONAL GROUNDING, 11 YARDS, FOURTH DOWN.

Taylor punts 48 yards out of bounds to the BUF 11. 1:18 remaining in first half.

On first down, Trubisky pass is incomplete looking for Valdes-Scantling. Trubisky finds Hamler for a gain of nine, tacked inbounds.

TIMEOUT #1: CHICAGO - 1:00 REMAINING

On 3rd-and-1 from BUF 20, Trubisky rushes for two yards, first down.

In hurry-up offense, Trubisky pass is incomplete, looking for Morris. Trubisky pass on second down is complete to Davis for gain of 13, first down at BUF 35.

TIMEOUT #1: BUFFALO - 0:31 REMAINING

On first down, Trubisky pass to Morris is incomplete. Trubisky second down pass intended for Davis is incomplete. On 3rd-and-10 from BUF 35, Trubisky is sacked for a loss of one yard by Pickens.

HALFTIME - Bears 6, Bills 3