The San Francisco 49ers return home after three-straight road games to host the Dallas Cowboys in Week 7 of the NFL season. The 49ers, of course, are still in search of their first win in 2017. Dallas enters the matchup with a 2-3 record and is coming off of its bye week.

Keep it right here for notes, highlights, observations and all the other happenings from "Dwight Clark Day" at Levi's® Stadium.

PREGAME

There are two major storylines for the 49ers in Week 7. C.J. Beathard will make his first-career start on Sunday. The rookie threw for 245 yards, one touchdown and one interception in Week 6 after replacing Pierre Garçon in the second quarter.

Defensively, the 49ers will get Reuben Foster back on the field. Foster has been out since Week 1 with a high-ankle sprain. The linebacker has been limited to just 11 snaps this season. It will be interesting to see how much Foster plays in his return. Last week, when Eric Reid returned from a knee injury, the safety played just 10 snaps. Foster could be on a pitch count against the Cowboys.

Here are San Francisco's inactives: Victor Bolden Jr., Dexter McCoil, Kyle Juszczyk, Mark Nzeocha, Pita Taumoepenu, Aaron Lynch and Erik Magnuson.

And the Cowboys: Kellen Moore, Darren McFadden, Chidobe Awuzie, Justin Durant, Damontre' Moore, Byron Bell and Benson Mayowa

The 49ers captains are Pierre Garçon, Jimmie Ward and Adrian Colbert.

FIRST QUARTER ("--" denotes a new possession)

The 49ers won the coin toss and elected to defer to the second half. DeForest Buckner batted down two passes on the game's opening possession to help force a three-and-out.

Trent Taylor fumbled the ensuing punt which gave the ball right back to Dallas.

Ezekiell Elliott gained 14 yards on the very next play to San Francisco's 6-yard line and followed with a 5-yard run to the one.

Elliott finished what he started and found the end zone on a 1-yard touchdown run to put Dallas up 7-0. (12:42)

That was Elliott's fourth touchdown of the season.

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A 2-yard carry by Carlos Hyde, a sack and an incompletion on third down brought on San Francisco's punt team.

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Elliott picked up a quick four yards which was followed by a 9-yard pass to Dez Bryant. A long pass interference penalty against Rashard Robinson got Dallas across midfield to the 49ers 41-yard line. Dak Prescott then found Jason Witten for 11 yards. An illegal contact penalty against Robinson erased a sack.

Elliott scored again, this time on a 25-yard run to put the Cowboys up 14-0. (7:56)

The long run put Elliott up to 59 yards on the ground and two scores midway into the first quarter.

Early deficits continue to haunt the 49ers.

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Hyde broke free for a 12-yard run to start the 49ers next drive. Beathard followed with a 14-yard pass to Marquise Goodwin. On the next third down, Beathard kept it on a read option for a gain of 16-yards.

Robbie Gould came in when the drive stalled and drilled a 42-yard field goal to make it 14-3, Cowboys. (4:28)

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A missed tackle turned a short pass to Cole Beasley into a 24-yard gain to midfield. The 49ers held on from there and forced a Dallas punt.

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Beathard opened the next possession with a dime to Goodwin on a deep crossing route that went for a 48-yard catch-and-run. David Irving ended the drive however with the Cowboys second sack of the day for a loss of 12 yards.

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Robinson got hurt on an incomplete pass intended for Bryant. The corner went straight for the locker room as Ahkello Witherspoon came into the game. Prescott ended the first quarter with 13-yard run.

SECOND QUARTER

Foster opened the second quarter with a tackle for loss against Elliott. Prescott followed with a 12-yard pass to Bryant to erase Foster's positive play. A 5-yard pass to Bryant converted on 3rd-and-4 to midfield. Dak found Dez again for a 27-yard gain as the receiver escaped from Witherspoon and took off down the right sideline.

Witten capped the drive with a ridiculous one-handed touchdown catch from 18 yards out to make it 20-3. (10:26)

Dallas went for two but Robinson broke up the pass intended for Brice Butler.

Of note, K'Waun Williams went down during the drive. Jimmie Ward moved to nickel corner, and Adrian Colbert came in at free safety.

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Raheem Mostert muffed the ensuing kickoff but was able to pick it up and return it to the 49ers 14-yard line. Beathard found Goodwin over the middle for 11 yards. His next third-down pass found George Kittle for 16 yards to move the chains. Tyrone Crawford beat Garrett Celek easily for a sack that effectively ended the 49ers drive.

Dallas is up to three sacks in the first half.

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Buckner and Elvis Dumervil nearly got to Prescott in his own end zone for a safety, but the quarterback just got the ball away in time. The 49ers did force a three-and-out to get the ball back at their own 40-yard line with 4:16 left in the half.

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Hyde's 12-yard run got the 49ers into Cowboys territory. Beathard followed with a 14-yard completion to Pierre Garçon. Breida recovered his own fumble and gained three on the next play. A 6-yard pass to Garçon set up 3rd-and-1. Hyde picked it up with a 2-yard run to the Cowboys 23-yard line. After the two-minute warning, Hyde took off for 16 yards to the Cowboys 7-yard line.

DeMarcus Lawrence got to Beathard for a sack fumble and Dallas recovered. The Cowboys now have four sacks. Dallas took its 20-3 lead into halftime.

THIRD QUARTER

The 49ers got the ball first to begin the second half. Beathard completed a 19-yard pass to Garçon. He later found Celek for 11 yards. The drive stalled at Dallas' 28-yard line when Beathard's fourth-down pass intended for Kendrick Bourne sailed incomplete.

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On the very next play, Elliott took a screen pass 72 yards to the house to put Dallas up 27-3. (10:58)

Dan Bailey is out with a groin injury, which meant that safety Jeff Heath came in as the Cowboys emergency kicker. Heath made the PAT which led to a big celebration on the Dallas sideline.

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A short pass to Hyde gained 11 yards on 3rd-and-10. That's all the 49ers would get before punting it back to Dallas.

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Foster injured himself after making a tackle on Elliott. The linebacker came up holding his back before taking a knee. He returned after missing just one play.

Dallas continued to march down the field with ease. Another big run by Elliott was followed by a 13-yard pass to Witten.

Prescott took the ball into the end zone himself with a 2-yard touchdown run to make it 33-3. (0:43)

Foster went down again following the score as his back is still clearly bothering him. Heath missed the PAT. That was a 13-play, 80-yard scoring drive.

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The third quarter ended with another sack fumble recovered by the Cowboys.

FOURTH QUARTER

Elliott continued to churn out yards as Dallas entered the red zone.

Bryant scored on a 2-yard touchdown catch to make it 40-3, Cowboys. (10:49)

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A defensive holding penalty negated an interception. Beathard took advantage of the second opportunity with a 13-yard pass to Trent Taylor. Aldrick Robinson chipped in with a 15-yard catch-and-run.

On 2nd-and-goal, Beathard scored on a 4-yard touchdown run. (6:14)

It was Beathard's first-career TD run.

Here's CJ Beathard's first career rushing touchdown #DALvsSF pic.twitter.com/q4T5d0Dc4P — San Francisco 49ers (@49ers) October 22, 2017

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Dallas' next drive ended with a turnover on downs.

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The 49ers possession ended with a turnover on downs as well.

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San Francisco fell to 0-7 following the 40-10 defeat.