Guardians vs. Rays 2026 ALCS: 10 key players who could decide the series

The American League Championship Series is set, and boy, are we in for a doozy. Two teams that know their style of baseball and simply win ballgames will clash for the AL pennant when the Tampa Bay Rays meet the Cleveland Guardians. Game 1 of the best-of-seven series is set for Monday, Oct. 12.

The Rays (98-64) were the best team in the American League this year and have home-field advantage in the series. That latter point is especially important, as Tampa Bay went 55-26 at Tropicana Field, tied for the best home record in all of MLB. The Rays swept the Yankees in three games in the ALDS.

The Guardians (85-77) won the AL Central and beat the White Sox in five games in the ALDS. This is Cleveland’s second ALCS appearance over the last three seasons, as well as the team’s third straight trip to the postseason.

We can talk about these teams until we’re blue in the face, but ultimately, the players are the ones who will decide which squad represents the American League in the World Series against either the Brewers or Dodgers.

So who are the most important players in the ALCS? With SeatGeek serving as the Official Ticket Marketplace of MLB, we’ve followed the Rays and Guardians closely all year, including throughout the playoffs. We’ve identified five players from each team who we believe will define how the ALCS plays out.

Guardians vs. Rays 2026 ALCS: 10 key players to watch

From superstar hitters capable of changing a game with one swing to dominant starting pitchers and shutdown relievers, both teams have players who could determine the outcome of the series. Here are five Guardians and five Rays who could have the biggest impact on which team advances to the World Series.

Guardians 3B José Ramírez: Cleveland's biggest offensive threat

The biggest name in this series, Ramírez is no stranger to the big stage. The veteran third baseman, who is an eight-time top-10 MVP finisher, is making his eighth postseason appearance.

He has actually struggled at times in October, which is surprising for a player of his caliber. But Ramírez came through in a big way for his club in the ALDS. He homered in Games 4 and 5 — both Cleveland wins — and proved instrumental in helping the team advance to the ALCS.

The Guardians don’t score a ton of runs, and Ramírez is the engine behind much of their offense. He’s a switch-hitter with power who draws walks, makes a lot of contact and rarely strikes out.

He’s the most important player for the Guardians in this series, and it’s not close.

Rays 3B Junior Caminero: Tampa Bay's biggest power threat

From one star third baseman to another, Caminero is the Rays’ most important bat in this series.

He’s only 23, but Caminero is already one of the best hitters in baseball. He swatted 45 homers in 2025 and followed that up with 42 long balls in 2026. Caminero hit for a better average in 2026 and also posted a much higher on-base percentage and OPS as he developed into a more well-rounded hitter. He hit .300 with two runs scored in the ALDS.

Caminero has as much raw power as anyone in MLB, and he can put it to use in games. Unlike Ramírez in Cleveland, Caminero has more lineup depth behind him, so he’s not someone opposing pitchers can necessarily just pitch around.

Caminero can change any game — or an entire series — with one swing.

Guardians SP Gavin Williams: Cleveland's ace and strikeout leader

Williams is awesome, and not enough people talk about him. The massive right-handed hurler is the Guardians’ best starting pitcher, and he certainly lived up to that billing in the ALDS.

Williams led the AL in strikeouts this year with 248 in 184 1/3 innings, and he kept punching tickets in the ALDS. He struck out 11 and allowed two runs in five innings in Game 1, pitched an inning of scoreless relief in Game 4 and then struck out 12 in 5 2/3 scoreless innings in Game 5.

He probably can’t pitch until at least Game 2 — if not Game 3 — but when he does, Williams will be counted on to give the Guardians quality, dominant innings.

Cleveland has an awesome bullpen, and we’ll highlight two key pieces shortly. As such, manager Stephen Vogt turns to his relievers early because he trusts those guys tremendously. Williams, so far, has been the one starter Vogt has leaned on to pitch deeper into games.

If what we saw in the ALDS is any indication, that should be the case in the ALCS as well.

Rays SP Drew Rasmussen: Tampa Bay's Game 1 starter and ace

Rasmussen is another dominant but unheralded arm on the national and global stage. He’s a two-time All-Star who has been outstanding for the Rays. After posting a 2.76 ERA in 2025, he recorded a 2.67 ERA this season with a WHIP below 1.00.

Rasmussen had a great start to his postseason, carrying a no-hitter into the eighth inning of Game 1 of the ALDS. He allowed just one hit over eight scoreless innings in Tampa Bay’s 1-0 victory.

Like the Guardians, the Rays have a very good — and deep — bullpen that manager Kevin Cash will lean on. He’s not afraid to pull his starters and turn to his relievers to eat innings, but Rasmussen is the guy. He’s the ace, and it’s important for him to pitch well and work deep into games.

With the Rays well-rested after their three-game sweep, Rasmussen will be tasked with setting the tone in Game 1 on Monday.

Guardians OF Jo Adell: Cleveland's postseason power X-factor

Most baseball fans know the deal with Adell by now. He’s a major power threat who is also prone to strikeouts. But that power is why the Guardians acquired him from the Angels this summer — it’s game-changing stuff.

Adell can turn a game on its head with one swing of the bat. He flirted with 40 homers last year, and even in a disappointing 2026 season, he hit 23. His overall numbers also improved after the trade.

Adell played a big role in Cleveland’s ALDS win with five hits and six RBIs. And we didn’t even see him leave the yard!

Outside of Ramírez, Adell is the other major threat for the Guardians when it comes to run production. If he gets hot and starts hitting homers, the Rays could be in big trouble.

Rays 1B Jonathan Aranda: A key bat in Tampa Bay's lineup

Aranda is another guy who doesn’t get enough love. He didn’t have as strong a 2026 season as he did in 2025, when he made the All-Star Game, but the left-handed slugger narrowly missed an .800 OPS while belting 22 homers and driving in 92 runs.

Aranda has an important role in the Rays’ lineup, hitting second between Yandy Díaz and Caminero. He’s the only left-handed hitter of the three, which can be advantageous when facing right-handed pitching.

Aranda had four hits and an important homer in the ALDS, and he’s probably the hitter besides Caminero most capable of carrying the Rays offensively in the ALCS if needed.

Guardians RP Tim Herrin: Cleveland's key left-handed reliever

The Guardians have a lot of great relievers to consider, but Herrin stands out. He’s the team’s impact lefty, and while he wasn’t as dominant in 2025 and 2026 as he was in 2024, Herrin remains a very, very good southpaw for Vogt to utilize.

Two of the Rays’ three most important hitters — Díaz and Caminero — are right-handed, but players like Aranda, Liam Hicks and Victor Mesa Jr. are key bats who all hit left-handed.

Herrin will certainly need to get those guys out — or retire any right-handed batters who pinch-hit for them.

Herrin pitched 2 1/3 scoreless innings across three ALDS appearances, striking out four. He should be used even more in the ALCS as a key bridge reliever.

Rays RP Cam Booser: Tampa Bay's left-handed bullpen weapon

Look, non-closer relievers are important, and in the playoffs, left-handed arms are especially valuable.

The Guardians have players like Steven Kwan, Chase DeLauter, Nathaniel Lowe and Travis Bazzana who all hit left-handed. Ramírez is a switch-hitter, so sometimes you need to turn him around.

Enter Booser.

Booser pitched a lot for the Rays this year in what was a breakout campaign for the 34-year-old southpaw in just his third MLB season. He posted a 1.98 ERA in 42 games, emerging as a go-to option in Tampa Bay’s bullpen.

Booser appeared in two ALDS games and pitched one scoreless inning in total. Left-handed hitters batted just .123 against him in 2026 with a .231 slugging percentage.

Booser clearly makes life difficult for left-handed hitters, and he’s certainly going to be called upon in some massive spots during this ALCS.

Guardians RP Cade Smith: Cleveland's dominant closer

Smith is a capital-D Dude.

Since debuting in 2024, Smith has pitched in 219 games and owns a 2.26 ERA and 12.7 K/9. He made the All-Star team this year and was tied for the AL lead in saves with 41.

Smith has been massive for the Guardians this postseason, too. He pitched in all five ALDS games and was able to record more than just three outs, including in Game 5.

Smith allowed just one run in 6 2/3 innings while striking out 11. He’s a premier shutdown closer with electric stuff, and when he’s on, hitters have no chance.

Given how the Guardians have called upon Smith to pitch multiple innings, look for that to continue with the stakes even higher. He’s their top reliever, after all, and they use him as such.

Rays RP Bryan Baker: Tampa Bay's closer and AL saves leader

Guess who was tied with Smith for the AL saves lead? You guessed it, Baker — Tampa Bay’s closer.

Baker was something of a castoff from Baltimore last year when he was traded to the Rays. The move has paid dividends for both teams, as Baker posted 41 saves, a 1.44 ERA and excellent underlying metrics in 2026.

Baker locked down saves in all three of the Rays’ ALDS wins over the Yankees, striking out four and allowing just one baserunner.

Baker has primarily been a ninth-inning-only guy, but this is October baseball.

Can Baker get more than three outs? Will the Rays ask him to?

We know Baker can lock down ninth-inning leads, but can he do more? That question will be answered very soon.