BALTIMORE --- Mookie Betts now officially has some company among the Red Sox as the Orioles’ chief tormentor.

J.D. Martinez is proving to be quite an able accomplice along those lines, something he proved yet again on Saturday night.

Martinez cracked the second of his two home runs on the evening in the top of the eighth inning, paving the way for a doubleheader sweep courtesy of a 6-4 Boston victory in the nightcap at Camden Yards.

Martinez hammered a drive to deep left center off Mike Wright Jr. to snap a 3-3 tie, as the Red Sox survived 18 innings and a host of relievers summoned from a bullpen running on fumes. Boston won for the second time in as many days with a starting pitcher completing only 2 2/3 frames, as Hector Velazquez followed Nathan Eovaldi in setting up a long road to victory.

“It puts a lot of pressure on your whole minor league system, your Triple-A system coming up,” Martinez said. “You’ve got to kind of show some strength with it. It’s tough, but we battled.”

All three multi-homer games for Martinez this season have come against Baltimore, including a pair at this ballpark. Betts and his career 1.022 OPS at this venue include five homers over two games in 2016, the last two coming against Wright on June 1 of that year. Betts saved his best work for the defensive side this time as the Red Sox improved to 13-2 against the Orioles this season.

“This game is one of those that we’re going to look back and say, ‘Wow, that was a good one,’” Red Sox manager Alex Cora said. “Like Tim Kurkjian says, one of those circled games.”

Kurkjian, Cora’s former colleague at ESPN and an avid baseball historian, would know all about the history Martinez could make in his debut season with Boston. His 37 homers leave only three men who have hit more in their first year with the club. Dick Stuart (42, 1963), Jimmie Foxx (41, 1936) and Manny Ramirez (41, 2001) now appear to be on borrowed time, as the Red Sox have 43 games remaining entering Sunday’s series finale.

“The guy’s amazing,” Cora said. “He works. He prepares. He doesn’t deviate from his strengths. He trusts the process and he’s been performing the whole season.”

Boston was into its relief corps by the third inning for the second time in as many days. The Red Sox didn’t expect spot starter Hector Velazquez to work deep into this one, and he left Brandon Workman with a 1-0 deficit thanks to an RBI double in the second by Renato Nunez. Trey Mancini singled home an inherited run against Workman, making it 2-0, and Boston escaped a bases-loaded jam when Nunez bounced a fielder’s choice grounder to short.

That wasn’t the first time the Red Sox used their defense to avoid what could have been serious early trouble. The Orioles put their first three men on base in the second and had a pair in scoring position when Betts ranged far into foul ground in right to snag a popup by Joey Rickard. Rafael Devers followed by picking Caleb Joseph’s hot shot wide of third, and Steve Pearce made a diving stretch at first base to record the inning’s final out.

“It’s not perfect, but we don’t complain,” Cora said. “We just see what happens. If they’ve got to get more outs than usual, they get them.”

Boston’s ability to hang around set up the comeback. Martinez drove a solo homer to the bleachers in right center in the fourth, making it 2-1. Eduardo Nunez tripled to the same alley leading off the fifth and Dan Butler’s sacrifice fly to left tied the game at 2-2.

By that point the end result seemed inevitable, and the Red Sox took their first lead in the sixth when Pearce scored on a wild pitch. Not even a solo homer to left by Rickard off Heath Hembree could slow Boston’s momentum, as Joe Kelly, William Cuevas and Craig Kimbrel allowed a lone run over the final three frames to finish it off. Brock Holt’s RBI single to center in the ninth plated Betts, who had laced a one-out double, and the Red Sox sealed their 27th series victory of the season.

“It’s been a grind these last couple days, and it’s been a long day today,” Martinez said. “To be able to put up some quick runs there towards the eighth and ninth inning – even that run by Mookie was a pretty big run. It helped us give Craig some breathing room.”

bkoch@providencejournal.com

On Twitter: @BillKoch25