Nathan Eovaldi pitched a seven-hitter for his first career complete game, and the Boston Red Sox beat the Baltimore Orioles 5-3 on Saturday in the opener of a day-night doubleheader.

The Red Sox posted their eighth win in 10 games after blowing two six-run leads in a loss on Friday night. The matchup was tied at 3 before slumping Bobby Dalbec's pinch-hit homer in the sixth.

Rafael Devers hit four singles for Boston, and Kiké Hernández added a two-run single.

Robinson Chirinos belted a two-run shot for Baltimore. The Orioles have lost three of four.

Eovaldi (2-2) threw 108 pitches in his 211th major league start. The 32-year-old right-hander allowed two earned runs, struck out six and walked one.

There was some applause when he trotted out for the ninth with the rarity of complete games in baseball.

Dalbec, who entered hitting just .162 having lost most of his playing time at first base to Franchy Cordero, drove a fastball into Boston's bullpen against Keegan Akin (1-1).

Less than 12 hours after wiping out a six-run deficit by outscoring the Red Sox 10-0 over the final three innings, the Orioles tied it at 3 in the fifth when Chirinos hit a hanging curveball from Eovaldi over the Green Monster.

The Red Sox had erased an early 1-0 hole when Jackie Bradley Jr. lined a run-scoring double and Hernández followed with his single that trickled into shallow left off the glove of diving third baseman Ramón Urías.

Orioles starter Jordan Lyles gave up three runs in 4 1/3 innings.

TRAINER'S ROOM

Orioles: A day after saying that 24-year-old INF prospect Jahmai Jones had season-ending Tommy John surgery, they designated him for assignment and called up RHP Cody Sedlock.

Red Sox: Placed RHP Hansel Robles on the 15-day injured list with back spasms.

BULLPEN SHUFFLE

In addition to Robles going on the IL, the Red Sox demoted right-hander Hirokazu Sawamura to Triple-A Worcester and recalled right-handers Ryan Brasier and Phillips Valdez.

START ANOTHER

Baltimore's Rougned Odor went 0 for 4, ending his career-best 11-game hitting streak.

UP NEXT

For the nightcap, Orioles right-hander Denyi Reyes (0-0, 0.00 ERA) is expected to make his first major league start and second appearance against Boston righty Josh Winckowski, who is slated to make his major league debut.