OAKLAND, Calif. -- Rookie third baseman Matt Chapman didn't have to wait long for his first major-league hit, and it turned out to be a game-winner for the Oakland Athletics.

Chapman hit a two-run single in the eighth inning that lifted the A's to a 7-6 victory against the New York Yankees on Friday night.

"The kid is here for a reason," A's manager Bob Melvin said of Chapman, who made his major-league debut Thursday against the Yankees. "We've seen in spring training he's a tough kid. He wants to play, he likes to play. He's not afraid of the situations."

The A's trailed 6-5 entering the eighth, but Yonder Alonso walked with one out and moved to third on Ryon Healy's ground-rule double off right-hander Jonathan Holder (1-1). The Yankees intentionally walked Stephen Vogt, loading the bases, but Chapman, lined Holder's 0-2 curveball to left, driving in Alonso and Healy.

"Going down 0-2 wasn't exactly how you envision that at-bat going, but I stepped out and maybe getting some experience yesterday I was able to slow it down a little bit more and go in there and battle," said Chapman, who struck out with the bases loaded in the ninth inning Thursday. "Luckily I was able to put the bat on the ball right there and get the job done."

Chapman had his first three career RBIs and also had a spectacular defensive play in the sixth, making a diving stop of a ground ball down the line and throwing out Ronald Torreyes at first.

In the second inning, Chapman initially was credited with an infield single on a ground ball to third base, but the Yankees challenged the call and he was ruled out.

"I guess having your first hit taken away from you, just was waiting for something sweeter," said Chapman, who had his first career RBI on the groundout.

The Yankees lost their season-high fourth straight game and fell to Oakland for the second straight time, one night after an 8-7, 10-inning defeat.

"I'm pleased with the way we keep fighting back, and that will bode well during the course of the season," Yankees manager Joe Girardi said. "Right now our bullpen's been in a little bit of disarray. We'll get that straightened out."

Rookie Aaron Judge hit his major league-leading 23rd home run, a three-run blast, and Chris Carter had a solo shot, for New York.

Judge went 2-for-3 with his home run, a triple, two walks, two runs and three RBIs, giving him 52 for the season. His three-run shot off A's left-hander Sean Manaea in the third cut Oakland's lead to 4-3.

"We got down early, were able to fight back and they just came up with a clutch hit when they needed it," Judge said.

Carter snapped a 4-4 tie with a leadoff home run in the sixth inning, his 14th career home run against Oakland, his former team, and second in two games.

Judge launched a one-out triple to right-center in the seventh and scored on Starlin Castro's single to center, making it 6-4.

But the A's cut New York's lead to 6-5 in the bottom of the seventh when pinch-hitter Rajai Davis walked, moved to third on Matt Joyce's single and scored on Chad Pinder's sacrifice fly.

A's closer Santiago Casilla pitched a scoreless ninth for his 11th save. Left-hander Daniel Coulombe (1-1) pitched 1 1/3 scoreless innings.

Manaea allowed five runs on eight hits, including two home runs, over six innings with seven strikeouts and two walks in a no-decision. He had gone 5-0 with a 1.97 ERA in his previous five starts, including a 4-1 victory at Yankee Stadium on May 26.

"I left a couple pitches up, a few mistake pitches and that's kind of what cost me, led to the home run and the solo shot in the sixth inning," Manaea said.

New York's Luis Severino allowed four runs on four hits over six innings. He struck out six and walked four.

"His arm slot, he just couldn't seem to find," Girardi said. "Then he found it about the fourth inning and was really pretty good after that. That happens, too. Can't really tell you why it happens but it happens."

The A's struck first, sending nine to the plate and scoring four times off Severino in the second inning to take a 4-0 lead. Vogt had an RBI double while Jaycob Brugman and Pinder added run-scoring singles in the second.

The Yankees answered with three runs in the third when Judge sent Manaea's 0-1 changeup into the right-field seats for a three-run blast.

In the fifth, Torreyes hit a one-out double and scored on Mason Williams' single to right, making it 4-4.

NOTES: Yankees RHP Adam Warren (right shoulder inflammation) was placed on the 10-day disabled list. ... Yankees RHP Giovanny Gallegos was optioned to Triple-A Scranton/Wilkes-Barre. ... The Yankees recalled C Kyle Higashioka and OF Mason Williams from Triple-A Scranton/Wilkes-Barre. Williams started in center field. ... Yankees LHP Aroldis Chapman (left shoulder rotator cuff inflammation) allowed a run and two hits with two strikeouts in two-thirds of an inning in a rehab appearance for Double-A Trenton and is expected to be activated from the disabled list on Sunday. ... New York C Gary Sanchez (groin) and OF Aaron Hicks (Achilles tendon) missed Friday's game and remain day-to-day. ... A's SS Marcus Semien (right wrist surgery) took pregame batting practice for the first time since going on the disabled list April 15. Manager Bob Melvin said there's a chance Semien could begin a rehab assignment late next week.