SEATTLE — The Seattle Mariners will look to regain a two-game lead in the American League Championship Series against the Toronto Blue Jays in Game 4 of the best-of-seven series at 5:33 p.m. PT on Thursday at T-Mobile Park.

The Mariners fell to the Blue Jays 13-4 in Game 3 on Wednesday. The loss cut Seattle's lead in the ALCS to 2-1.

The Mariners have used the same lineup throughout the entire postseason, with the occasional edit when matched up against left-handed starting pitchers.

Seattle is scheduled to face right-handed starter (and future Hall of Famer) Max Scherzer on Thursday, and the team chose to make an interesting tweak to the lineup.

Victor Robles, who's started in right field the entire postseason, will be on the bench for Game 4 of the ALCS. Dominic Canzone (the usual designated hitter these playoffs) will play right field, and Jorge Polanco will DH.

Switch-hitter Leo Rivas will fill in at second base for Polanco.

Rivas has received limited playing time in the playoffs, but he's made the most of it.

Rivas' lone hit in five at-bats this postseason was a game-tying RBI single in Game 5 of an American League Divisional Series against the Detroit Tigers on Oct. 10. His knock tied the game 2-2. The Mariners ultimately won 3-2 in 15 innings.

"We've seen some really good at-bats from Leo throughout his time with our club," Seattle manager Dan Wilson said in a pregame news conference Thursday. "Certainly the game against Detroit, picking up that huge pinch-hit knock. What he's done at second base is stellar, as well. Getting a chance to get him in there and it should work out well. ... Just a good time to get Leo in the lineup."

Rivas is one of the most patient hitters on the team. He's drawn two walks this postseason on top of his game-saving hit in the ALDS. He had an 18% walk-rate this season — which would have been second in the majors among qualified hitters behind New York Yankees outfielder Aaron Judge (18.3%). Rivas didn't receive enough plate appearances to qualify.

Rivas' patience presents a constant on-base threat in the bottom of the order, which can help induce more scoring opportunities for the top third of the lineup, which includes outfielders Randy Arozarena and Julio Rodriguez and catcher Cal Raleigh.

"What he brings to the lineup is huge," Rodriguez said in a news conference Thursday. "He's always having great at-bats, plays great defense, too. He's somebody that, when you put him in the lineup, he's definitely going to have those good at-bats and he can get everybody in trouble just creating things on the base paths."

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