CLEVELAND — Just about the time it started to get interesting, the Mariners’ offense took out their bats and pounded that possibility into a memory as has been the case for much of the series at Progressive Field.

Leading comfortably for most of the game, the less-than-stellar appearance from reliever Dan Altavilla and a spectacular catch that wasn’t from Ben Gamel suddenly put the Indians within two runs going into the eighth inning.

But the bottom of the Mariners’ now-whole lineup got back those runs, scoring three runs in the inning on an RBI single from Gamel and Ryon Healy’s second homer of the game, a two-run blast. That extended the lead to five runs and allowed Seattle to cruise to a 10-4 win over the Indians.

Sunday’s win capped an outstanding 10-day road trip for the Mariners as they went 7-3, winning three-games series over the Rangers and White Sox and taking three of four from the Indians, the expected winners of the American League Central Division.

The last time the Mariners won at least seven games on a road trip was Aug. 27-Sept. 6, 2015 when they went 2-2 vs. the White Sox, 2-1 vs. the Astros and swept the A’s in a three-game series.

“Heck of a road trip,” manager Scott Servais said. “I’m really excited where this team is and where it’s headed. Just an outstanding road trip.”

That team is headed back to Seattle with a 16-11 record to close out April. The Mariners will have Monday off and open a six-game homestand on Tuesday night, starting with a three-game series against the Oakland A’s. It’s their best start going into May 1 since 2009 (13-9) and it’s the most wins since 2003 (17-10).

“Our team has a lot of confidence right now,” he said. “I’m looking forward to what’s ahead of us. It was a really good month of April and it was important for us to get off to a good start. I’m looking forward to May.”

For the second straight game and fourth time this season, the Mariners reached double-figures in runs. They banged out 14 hits, bashing four homers with three other extra base hits. It was the first time the Mariners hit four homers in back-to-back games since June 8-9, 1999.

“We all thought we could do some nice things offensively and we are starting to get in a good groove now,” Servais said.

Over the four games, the Mariners racked up these numbers against the Indians:

— Batting average: .286 (42 for 147)

— On-base percentage: .329

— Slugging percentage: .517

— Runs: 32

— Doubles: 10

— Triples: 2

— Homers: 10

— RBI: 32

— Walks: 9

— Strikeouts: 29

“We’ve got a lot of potential — one through nine,” said Robinson Cano. “Our nine hitter today hit two homers. He was the player of the game. That’s the thing. It’s not one guy. You can compare this lineup with any team right now in the league. What’s the best one? We can compete with anyone.”

That No. 9 hitter was Healy, who had easily his best game for the Mariners, going 3 for 4 with a double, two homers, three runs scored and four RBI from the last spot in the order.

When was the last time he batted ninth in a lineup before this season? It’s something he had to think about.

“I don’t think I ever have to be honest,” he said.

And he isn’t mad about it. That’s how good the lineup can be.

“There’s no arguments there,” he said. “Everyone knows that. No matter where you hit in this lineup, everybody is a 2-3-4 hitter. It’s ridiculous.”

The offense overshadowed a strong showing from the starter Marco Gonzales, who pitched six innings, allowing two runs on six hits with a walk and four strikeouts to improve to 3-2.

Gonzales need a timely double play on a botched bunt in the first inning and gave up a two-run homer Brandon Guyer in the bottom of the second after his teammates had scored five runs in the top of the inning. But besides that hiccup, he pitched with a lead and got outs.

“A version of me in the past might have let off and tried to locate more and take a little off, but the new mentality I’ve had is be aggressive and attack,” he said. “I was just going after them and not giving them a chance, getting early strikes. That’s my game and I need to stick to it, regardless of the score.”

Gonzales pitched six complete innings in back to back outings. And with a 6-2 lead and his pitch count at 89 pitches, he wanted to start the seventh.

“I wanted it,” he said. “Any time you start a game, you want it to be your game. But it was Skip’s decision and I honored that.”

With the day off on Monday and Dan Altavilla, Juan Nicasio and Edwin Diaz had not thrown since Thursday, Servais went to his bullpen.

“We thought it was best — he did his job, he gave us six innings,” Servais said. “With the off day tomorrow, it allowed us to go to the bullpen and keep those guys sharp.”

It didn’t go quite as expected. Altavilla was completely out of sorts with his mechanics, throwing wayward pitches at terrifying velocities. He hit the first batter he faced, struck out the second and walked the next two to load the bases.

Servais turned to James Pazos to clean up the mess. The big lefty struck out Bradley Zimmer. But with two outs, Jose Ramirez hit a line drive to left field. It initially appeared that Gamel made a ridiculous diving catch to end the inning. Even third base umpire Mark Wegner called it an out. But a replay review showed clearly that he ball squirted out of Gamel’s glove as he hit the warning track.

“I didn’t really know what to do,” he said. “I caught it and came out at the very end when I went to the ground and slid. I got up to throw and umpire called out so I wasn’t going to challenge it.”

The call on the field was overturned. Ramirez was awarded a double and Francisco Lindor, who had scored from first, had to go back to third. Pazos ended the rally by snaring the hard one-hopper off the bat of Michael Brantley and flipping it to first.

The Mariners answered immediately. Mitch Haniger tripled to right field to lead off the inning. Gamel singled him home and Healy crushed his homer to make it 9-4.

“There wasn’t any panic with this lineup,” Gamel said. “It was nice to get one to sneak through.”