SEATTLE -- It had been a week of reflection for Kyle Gibson, who recorded his 100th MLB victory last Saturday vs. the Mets and reached 10 years of big league service time four days later.

The 35-year-old right-hander has played for four teams over 11 seasons. He’s seen a lot happen around baseball. He’s been an integral cog of multiple pitching staffs because of his calm presence on the mound, his leadership and his knowledge of the game, which has been especially beneficial this year in Baltimore’s young clubhouse.

More personal history was made for Gibson on Friday night -- only this time, not the good kind.

Gibson allowed a career-high nine earned runs over 5 1/3 innings as the Orioles fell, 9-2, in the opener of a three-game series at T-Mobile Park against the red-hot Mariners, who notched their eighth consecutive win. Gibson gave up a career-high-tying 12 hits, including a season-high three home runs -- the biggest blow being a three-run homer by Julio Rodríguez during Seattle’s five-run fourth that pushed its lead to 7-1.

"That’s probably about as bad as I’ve executed pitches in a long time,” Gibson said. “I had a couple innings there where I felt a little bit better and in rhythm, but in general, I just didn’t do very much well -- didn’t make pitches when I needed to, didn’t limit damage, didn’t execute some sliders in instances where I needed to."

“I think they had a good plan, and I didn’t execute my plan," Gibson added. "Unfortunately, for five straight innings, that’s what happened.”

Gibson is typically great at developing his plans and mapping out potential pitch sequences. Those are reasons why he’s stuck in the big leagues for so long, a feat which netted him a celebration in Baltimore’s clubhouse at Camden Yards earlier this week.

On Wednesday, Gibson was presented with a framed memorabilia piece that read, “Congratulations on 10 years in The Show,” and featured pictures of him with all four teams he has pitched for -- the Orioles, Phillies, Rangers and Twins. Outfielder Aaron Hicks -- Gibson’s teammate in Minnesota from 2013-15, and again this year in Baltimore -- received one as well after hitting the same milestone this week.

“Listen, It’s been a lot of fun, I’ve been able to do a lot of cool stuff,” Gibson said. “But the people I’ve done it with have made it that much better. I’ve been really fortunate to be on four teams that have a lot of really good people.”

Over the years, Gibson has rarely had the long-term future in mind. He keeps his focus on the present.

Perhaps that’s why Gibson is a former All-Star closing in on his eighth season with at least 150 innings pitched (he’s now at 145 1/3 in 2023).

“I was reminded a lot just to not lose focus of where I am right now, and to not worry about getting to 10 [years], or getting to 12,” Gibson said. “Just too many things were going on for me each and every year that it just kept reminding me, ‘Hey, just worry about today. Tomorrow will be here whenever tomorrow gets here.’”

After Friday night, Gibson was surely looking toward tomorrow, following one of the toughest outings of his big league tenure, one that ended a strong run. Over the righty’s previous four starts, he had pitched to a 3.24 ERA.

“I just thought he left too many balls in the middle part of the plate, it looked like,” manager Brandon Hyde said. “They were really aggressive tonight on him. He was throwing a ton of strikes, just some missed locations, and they got the barrel to the baseball.”

Although Gibson has had a solid season, he’s struggled against Seattle. He previously allowed five runs on seven hits and three walks in a three-inning start vs. the Mariners in Baltimore on June 23.

Fortunately for Gibson, he won’t pitch against Seattle again this year -- unless there’s a postseason series between these two clubs. And with Gibson being one of only three pitchers on the Orioles’ active roster who has playoff experience (along with Jack Flaherty and Jacob Webb), they likely can’t afford to have him turn in an outing like this one on a higher-profile stage.

“Definitely an outlier when it comes to the rest of the season,” Gibson said. “For the most part, I feel like when I’ve executed pitches, I’ve gotten outs and I’ve been able to get through the game. But for whatever reason, these guys have had my number a little bit this year.”