PEORIA, Ariz. — The waiting was agonizing. For Seattle Mariners fans refreshing their timelines. For front offices circling the trade market. And especially for Brendan Donovan, who spent an entire offseason bracing for a phone call that didn’t come — until it finally did.

“If you would have asked me as soon as the offseason started, I thought that I was gonna be gone pretty quick,” Donovan admitted this week from Mariners camp. “Around the GM meetings and winter meetings, we got flooded with information. I wasn’t sure what to expect.”

The deal that sent the 2025 All-Star from the St. Louis Cardinals to the Seattle Mariners didn’t materialize until Feb. 2. By then, Donovan had already been training in Florida, operating in limbo, fully aware he was likely to be the next impact Cardinal shipped out in a reshaping winter. As February crept forward, uncertainty only grew.

“Am I getting moved?” he remembered thinking. “It was getting close.”

Then came the message: clarity would arrive after the weekend. On Monday, the call confirmed it. Mariners president of baseball operations Jerry Dipoto was on the other end. It was done. A blockbuster. Seattle had its answer.

Now, just weeks into camp, three revelations are already standing out — and they may define the Mariners’ 2026 season.

1. Third Base Is the Mission — For Now

Versatility has always been Donovan’s calling card. In four big league seasons, he has appeared everywhere except catcher and center field. But Seattle isn’t easing him in as a utility safety net. They are hammering one message: third base.

“Right now, we’ve just been hammering third,” Donovan said. “That’s where most of our work’s been.”

It’s a subtle but critical shift. Seattle’s infield stability has wavered in recent seasons, and Donovan’s steady glove could provide immediate balance. He’s taken reps at second and even drifted into the outfield for reads, but the emphasis is clear. The hot corner is his to own.

For a player known for adaptability, the assignment is almost refreshing. Clarity after months of trade chaos. A defined role. A fresh start.

2. The Leadoff Fix Seattle Desperately Needed?

The Mariners’ leadoff spot was a statistical sinkhole last year. After Victor Robles fractured his shoulder in the first road trip, the carousel began. J.P. Crawford. Randy Arozarena. Julio Rodríguez. Dylan Moore. The results? A .237 average, .311 OBP, and a .659 OPS from the No. 1 spot — bottom tier in baseball.

Enter Donovan.

Of his 2,006 career plate appearances, 826 have come leading off. He understands the psychology of it. The chess match. The responsibility.

“You set the table, right? You can set the tone,” Donovan explained. “There are spots where you feel like you need to get after that first pitch. There are spots where you need to see everything, gather information, and relay it.”

That duality — aggressor and informant — is what Seattle has lacked. Donovan doesn’t just want to bat first; he understands the ecosystem of it. And in a lineup featuring power threats like Cal Raleigh, that on-base presence becomes magnified.

Which brings us to revelation No. 3.

3. He’s Not Fast — But He’s Thinking Bigger

Donovan has never been labeled a burner. Just 15 career stolen bases. Sprint speed in the 27th percentile last season. On paper, he’s not a prototypical chaos-creator.

But Seattle doesn’t need him to be reckless. They need him to be intelligent.

Working with first base coach Eric Young Jr., whose influence helped Seattle tie for third in MLB with 161 steals last year, Donovan is focused on something more subtle: the extra 90 feet.

“Being a leadoff hitter, it’s like, how can I find a way to touch home plate first?” he said. “Taking an extra 90 feet is important.”

He also understands context.

“If you’re on first base with Cal Raleigh up, you’re still in scoring position,” Donovan said. “That sounds crazy, but he can leave the yard anytime.”

It’s a nuanced philosophy. Controlled aggression. Baseball IQ over raw speed.

And then there’s the ballpark.

T-Mobile Park carries a 91 park factor — one of the most pitcher-friendly environments in baseball. For many hitters, it’s a daunting adjustment. Donovan shrugs. He spent years in Busch Stadium’s dense air and cold springs.

“I’ve always tried to do damage on a line,” he said. “A line drive can play in any ballpark.”

That may be the most telling quote of all.

Seattle didn’t trade for Donovan to chase highlight-reel homers. They acquired him for contact, adaptability, and quiet consistency — the very traits that often separate playoff hopefuls from October participants.

He thought he was gone months earlier. He braced for it. Waited for it. Now that he’s here, the Mariners are betting that the patience — and the perspective — forged in that uncertainty will translate into something bigger.

The trade drama is over. The role is defined. And if these early signals hold, Brendan Donovan might not just be Seattle’s offseason addition. He might be the piece that finally sets the table for something far more dangerous.