“We’ve said it all year: We’re never out of the game,” Carroll said. “It’s not over until it’s over and we put together some great late-game at-bats and it paid off.”

Finnegan (2-5) retired Gabriel Moreno for the first out before Lourdes Gurriel Jr. singled to center, bringing up Carroll, the reigning NL Rookie of the Year who has struggled at times this season.

But he jumped over a Finnegan splitter, threw the ball over the right-center fence and provoked a noisy Arizona celebration. It was Finnegan’s fifth blow save of the season in 33 chances.

“I just couldn’t finish tonight,” Finnegan said. “I had a lead on every guy I faced — I just couldn’t put them away.”

Washington built a big early lead. C.J. Abrams struck out to start the game, but the next six Nationals reached base en route to their 5-0 lead. Alex Call had the big hit, hit a three-run home run to left, which was his first long ball of the season. James Wood and Keibert Ruiz also had RBI hits.

Call was promoted Sunday from Triple-A Rochester. The 29-year-old has played for the Nationals and Guardians the past three seasons.

Washington made it 6-0 in the second on Harold Ramírez’s RBI single. Call, Ruiz, Ramírez, Juan Yepez, Ildemaro Vargas and Jacob Young all had two hits.

For Arizona lefty Jordan Montgomery, it was the latest tough night in a brutal season. He now has a 6.51 ERA and has not come close to the level the D-backs expected after signing him to a one-year, $25 million contract in March.

Montgomery gave up six runs on nine hits in four innings. He walked three and struck out one.

The D-backs cut the margin to 6-2, scoring one run in the fourth and fifth innings. Newman had two hits, including an RBI double. Washington added two more runs in the sixth inning for an 8-2 lead.

But Arizona was far from done.

“That was a team that played with heart, determination and a lot of will,” Arizona manager Torey Lovullo said. “The first couple innings were tough. We got steamrolled. But we kept going.”

Mitchell Parker gave up two runs on four hits and two walks, while striking out three. The left-hander bounced back from two straight bad starts, allowing 11 earned runs in 3 2/3 innings.

Joe Mantiply (5-2) earned the win by pitching a scoreless ninth inning.

The D-backs called up RHP Slade Cecconi and sent RHP Yilber Diaz to Triple-A Reno. Diaz has been solid in four starts with a 4.05 ERA, but with RHP Merrill Kelly and LHP Eduardo Rodriguez both close to returning from the injured list, there was no room in the rotation. Cecconi will pitch out of the bullpen.

Kelly and Rodriguez are both scheduled to pitch simulated games on Wednesday. Kelly will throw three innings and 50 pitches, while Rodriguez will throw four innings and 55-60 pitches.

D-backs 1B Christian Walker left the game in the fourth inning with a strained left oblique muscle. Lovullo said the veteran would undergo tests tomorrow to determine if he needs to go on the injured list.

The Nationals — who lagged in the NL playoff race — traded starting outfielder Lane Thomas to the Cleveland Guardians for three prospects before Monday’s game. Thomas hit .253 with eight homers and 28 stolen bases.

The D-backs start RHP Ryne Nelson (7-6, 4.85 ERA) on Tuesday night. The Nationals counter with LHP Patrick Corbin (2-10, 5.26 ERA).

AP MLB: https://apnews.com/hub/mlb