OAKLAND, Calif. (AP) — Khris Davis hit another big home run, Jharel Cotton pitched five shutout innings of one-hit ball and the Oakland Athletics extended their season-best winning streak to seven games with an 8-1 victory over the Texas Rangers on Sunday.

Texas got swept over three games at an inopportune time. The Rangers entered the series in contention for the second AL wild card, but fell 5 1/2 games behind Minnesota with a week left in the season. The Twins swept Detroit over four games this weekend.

The Rangers have lost eight straight in Oakland and 10 of 15 overall.

Cotton (9-10) struck out six and allowed one walk as he won his fourth straight decision.

Davis’ 41st home run, projected at 445 feet by Statcast, came on a 1-1 changeup from starter Martin Perez (12-12). It highlighted a decisive five-run burst in the fifth inning for Oakland.

gettyimages 853200194 Rangers Swept In Oakland, Playoff Hopes Dwindling

OAKLAND, CA – SEPTEMBER 24: Khris Davis #2 of the Oakland Athletics trots around the bases after hitting a two-run homer off of Martin Perez #33 of the Texas Rangers in the bottom of the fifth inning at Oakland Alameda Coliseum on September 24, 2017 in Oakland, California. (Photo by Thearon W. Henderson/Getty Images)

A’s pitchers held the Rangers scoreless for a season-high 21 consecutive innings in the series — their previous best was 16.

The Rangers broke through in the seventh, when Nomar Mazara hit a solo home run — his 20th — off Simon Castro.

Matt Chapman had two hits, including a double, and two RBIs, and Jed Lowrie had a two-run single in the fifth.

Aside from Mazara’s homer, the Rangers didn’t advance a runner into scoring position. They were 0 for 7 in that department in the series.

ANTHEM PROTEST

A’s catcher Bruce Maxwell took a knee during the national anthem for the second straight day. On Saturday, he became the first major league baseball player to participate in the protest movement.

gettyimages 853141460 Rangers Swept In Oakland, Playoff Hopes Dwindling

OAKLAND, CA – SEPTEMBER 24: Bruce Maxwell #13 of the Oakland Athletics kneels in protest next to teammate Mark Canha #20 duing the singing of the National Anthem prior to the start of the game against the Texas Rangers at Oakland Alameda Coliseum on September 24, 2017 in Oakland, California. (Photo by Thearon W. Henderson/Getty Images)

TRAINER’S ROOM

Rangers: Interim manager Steve Buechele said it wasn’t known when manager Jeff Banister will rejoin the team. Banister flew to Texas on Saturday morning to be with his ailing mother Verda, who lives in Clear Lake.

Athletics: OF Chad Pinder was out of the lineup for a second straight day and has entered concussion protocol, and it’s not clear whether he’ll be cleared to play before the end of the season, manager Bob Melvin said. Pinder suffered injuries previously thought to be whiplash after crashing into the center-field wall on Friday. He was sent home Saturday after his symptoms worsened. … OF Boog Powell (knee) is on roughly the same timetable as Pinder. “There’s a chance he might not play again, but we’re holding out hope that he can,” Melvin said. … Maxwell is close to completing concussion protocol tests and could be behind the plate for Monday’s game, Melvin said.

UP NEXT

Rangers: RHP Andrew Casher (10-10, 3.44 ERA) will start Monday’s series opener against Houston. He is 1-4 with a 4.06 ERA against the Astros in five starts this season. He’ll be the first Rangers pitcher to start six games against the same opponent since 2012 (Yu Darvish, vs. the Los Angeles Angels).

Athletics: RHP Daniel Gossett (4-9, 5.38) will pitch Monday’s series opener against Seattle. Gossett has lost three of his last four decisions and is 0-2 with a 6.75 ERA in two career starts against the Mariners.

(© Copyright 2017 The Associated Press. All Rights Reserved. This material may not be published, broadcast, rewritten or redistributed.)

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