Before Tuesday's Trade Deadline, the Blue Jays acquired Brad Lincoln from Pittsburgh and Steve Delabar from the Mariners, who will be looking for their first sweep of Toronto since 2007 on Wednesday.
Delabar made his club debut Tuesday, but by then, the Mariners had all but wrapped up a 7-2 victory. Besides, Toronto would much rather see Lincoln on Wednesday. His appearance would likely mean a Blue Jays lead, because the club has plans to use the former Pirate as a setup man.
"My mentality fits that pretty well," the right-hander Lincoln said. "For me to use my stuff like I know how has been a long time coming. Now it's finally starting to come together.
"It's either time to put up or shut up. For me, at this time of my career, I'm going to have to start putting up numbers to stick around. That brought me to the realization now is the time to step it up."
As for the Mariners, although there was plenty of reported interest in several young players, they made sure to keep their core intact at the Deadline.
"We wouldn't allow it to happen," manager Eric Wedge said. "There's no way we would allow anything to derail this. Like I've said so many times, we have a vision and a plan and we're going to stick with it. Any move we make, we feel is just a part of that. Nothing's going to derail this. We're just going to keep moving forward."
Seattle sends Blake Beavan (6-6, 5.20) to the mound, where he will make his fourth start since being recalled from Triple-A. The 23-year-old right-hander is 3-0 with a 3.05 ERA since returning to the big league club.
"I'm pleased, but not satisfied," Beavan said. "I want to keep building on each start and get back where I need to be, which is competing and getting deep in the game and giving our guys a chance to win a ballgame every night."
Beavan struggled with his curveball command in his latest victory against the Royals and wound up using mostly his fastball and slider.
Blue Jays: Villanueva looks to stay unbeaten
His last time out, Carlos Villanueva allowed two runs in five innings to earn a victory against the Tigers.
That marked the fourth consecutive start in which Villanueva picked up a win, and he is 6-0 on the season. He entered the rotation on June 29, and Toronto has won each of his starts since.
Villanueva has never started against Seattle, but he pitched twice in relief against the M's, tossing 1 2/3 scoreless innings.
Mariners: Thames happy to be in Seattle
Eric Thames, who started the season as the left fielder for the Blue Jays, was dealt to Seattle on Monday night.
He hit .243 with three homers for Toronto and was optioned to the Minors earlier this year, as Travis Snider -- who was dealt for Lincoln at the Deadline -- took over the starting spot.
"It's just a great opportunity," said Thames, who did not play on Tuesday. "I felt like in Triple-A I had no idea what was going on, what was going to happen. Now, talking to the GM of the Seattle Mariners, and knowing it's a fresh chance for a new start with a great band of teammates."
In four at-bats against Beavan, Toronto's Edwin Encarnacion has three hits -- two homers and a double.
The Blue Jays have won each of the past three season series against the Mariners, but trail this season's head-to-head clash, 3-2.
Since June 1, the Mariners bullpen has posted a 2.37 ERA.