Rivas will start at second base and bat ninth in Friday's ALCS Game 5 versus the Blue Jays.

EDGE Analysis

For the second straight game, the Mariners are going with Rivas at second base, Jorge Polanco in the designated hitter spot and Dominic Canzone in right field, with Victor Robles retreating to the bench. Rivas went 0-for-2 with a walk in Thursday's Game 4 loss.

Rivas was scratched from Thursday's lineup against the Rockies for an undisclosed reason.

EDGE Analysis

Rivas was originally slated to start at second base while hitting ninth. It's unclear why he was removed from the lineup, but Jorge Polanco will take over at second base with Mitch Garver entering the lineup to serve as the catcher.

Rivas is out of the lineup for Sunday's game against the Astros.

EDGE Analysis

Rivas will be left out of the lineup for the third game in a row while the Mariners make an effort to get their best bats in the lineup. To that end, Jorge Polanco will once again cover second base, allowing Dominic Canzone to serve as the Mariners' designated hitter while Victor Robles occupies right field.

Rivas is out of the lineup for Friday's game against the Astros.

EDGE Analysis

Rivas is on the bench for the third time in four games, with Jorge Polanco manning second base. Rivas has one hit in his last 16 at-bats, but he has a pair of stolen bases and a 5:4 BB:K during that stretch.

Rivas is out of the lineup for Wednesday's game against the Royals.

EDGE Analysis

The switch-hitting Rivas will take a seat for the fourth time in five games, with three of those absences coming against left-handed pitchers. The Mariners seem to be prioritizing Rivas ahead of Cole Young at second base of late, but Jorge Polanco will remain a factor at the position on days in which he's not serving as a designated hitter.

Rivas is not in the lineup for Tuesday's game in Kansas City.

EDGE Analysis

Rivas had started the last two games and four of the last five against right-handed pitching at second base, but he'll begin Tuesday's series opener versus righty Michael Wacha on the bench. Jorge Polanco is at second base and Dominic Canzone is in the designated hitter slot for the Mariners.

Rivas went 1-for-1 with a two-run, walk-off homer Wednesday in a 4-2 extra-innings win against the Cardinals.

EDGE Analysis

Rivas began the game on the bench but entered as a pinch runner for Jorge Polanco in the 11th frame. He stuck around in Polanco's DH spot when the contest moved to the 12th, then got a turn to bat in the 13th. Rivas made the most of the opportunity, launching a two-run blast to right field to send Seattle home with a victory. Though Rivas has been up and down between the majors and minors and has found playing time sporadic while with the big club, he's been productive when called upon, posting a .288/.416/.397 slash line with two homers, nine RBI, 17 runs and four steals over 38 games. Perhaps most impressively, he's posted a 16.9 percent walk rate with a tolerable 21.3 percent strikeout rate.

Rivas isn't in the lineup for Tuesday's game against the Cardinals.

EDGE Analysis

Rivas will receive a day to rest Tuesday after going 2-for-11 with an RBI and a run scored over his last five games. Jorge Polanco will cover second base in Rivas' absence while Mitch Garver serves as the DH.

Rivas will start at second base and bat ninth in Sunday's game against the Cardinals.

EDGE Analysis

Since being called up from Triple-A Tacoma when the Mariners' active roster expanded from 26 to 28 men, Rivas has gone 3-for-10 with a pair of extra-base hits and two walks. Though the sample has been small, Rivas' performance appears to have at least temporarily allowed him to overtake Cole Young as Seattle's preferred option at the keystone. The switch-hitting Rivas will be included in the starting nine for the third time in four games, including a second straight matchup versus a right-handed starting pitcher (Miles Mikolas).

Rivas hit a two-run home run in his lone at-bat in Monday's 10-2 loss to the Rays.

EDGE Analysis

Rivas was called up earlier in the day as rosters expanded to 28. He didn't start, but he pinch hit for Jorge Polanco in the ninth inning and provided the Mariners' lone runs in the lopsided loss. The homer was the first of his big-league career Rivas hadn't played in the majors since May 29 after a middling stretch of action early in the campaign. The infielder is slashing .295/.419/.361 with six RBI, 15 runs scored, four stolen bases and a double over 74 plate appearances. Rivas is likely to fill a reserve role around the infield, with his best chance of playing time coming at second base if he can challenge the duo of Polanco and Cole Young.