Rays vs Guardians Prediction, Picks & Best Bets for Tonight's ALCS Game 4

Shawn Krest - Betting Analyst at Covers.com
Shawn Krest • Betting Analyst 20+ years betting experience
Updated: Oct 16, 2026 , 02:00 PM ET • 4 min read

The Rays and Guardians will battle each other and Mother Nature for the edge in the ALCS. My Rays vs. Guardians predictions like Tampa’s chances to even things up, weather permitting.

mlb

Match starts: 1 hrs
Rays vs Guardians Predictions. Nick Martinez Tampa Bay Rays MLB
Photo By - Reuters Connect. Tampa Bay Rays starting pitcher Nick Martinez (28) pitches against the New York Yankees during the first inning of Game 3 of the ALDS

With stormy weather swirling around Progressive Field, my Rays vs. Guardians predictions back the visitors, assuming the game goes ahead as planned tonight.

The Tampa Bay Rays are rolling out veteran hurler Nick Martinez, while the Cleveland Guardians are opting for Shawn Armstrong in a likely bullpen game to preserve their top arms. 

This pitching advantage gives us all we need in our MLB picks for Game 4 of the ALCS, with first pitch scheduled for 8 p.m. ET on TBS.

 TOP PICK
Rays vs Guardians prediction: Rays moneyline

For help understanding probabilities, see our odds calculator.

The Tampa Bay Rays are slight favorites over the Cleveland Guardians, but I’d stick with them through 55%. 

Cleveland leads the series 2-1 and can keep things from going back to Tampa if it wins twice at home.  However, the Guardians seem to be counting their chickens a bit when it comes to their pitching strategy. 

It appears that Cleveland plans to have co-aces Parker Messick and Gavin Williams, who have started six of the Guardians’ eight postseason games, ready to go on full rest in Games 6 and 7, or to start the World Series if they wrap things up by Game 5.

That means lots of bullpen and spot-starter work in Games 4 and 5 (Shawn Armstrong will open tonight), a plan muddled further by the prospect of bad weather, with rain in the forecast for most of today. 

Assuming the game is played, Tampa will have Nick Martinez on the mound, giving them a massive starting-pitching advantage in Game 4. 

Covers COVERS INTEL: Martinez has dominated Cleveland this season, allowing Guardians batters to post a .159/.178/.182 slash line against him in two starts, which translates to an OPS+ of 4 (96% below league average). For his career, Martinez is .161/.212/.258 at Progressive Field for an OPS+ of 28. 

Who will win Rays vs Guardians?

Rays: Batters have seen relievers a couple of times, and the Rays are dangerous when they get familiar with a pitcher. Team OPS+ goes from 98 the first time facing a reliever to 139 the second time and 173 the third. 

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Rays vs Guardians combo

The Guardians will mix and match pitchers for the next two games, which is dangerous against a Rays lineup that is looking for a spark.

None of the Tampa Bay regulars have a postseason OPS over .667, and the Tampa lineup won't be in a group slump forever. A few good at-bats against familiar Cleveland relievers could open the floodgates.

Both teams will also be motivated to score early, with the prospect of mounting a comeback in steady, cold rain looming if they don’t. Aggressive baserunning and bunting to move up and scratch across an early run will likely follow anyone getting on base early.

Rays vs Guardians combo

  • Rays moneyline (51%)
  • Over 6.5 runs (53%)
  • Run in the first inning (44%)

Rays vs Guardians player prop: Chase DeLauter over 1.5 total bases

Chase DeLauter has had a breakout postseason, hitting in six of the eight games and going 4-for-10 against the Rays with three extra-base hits.

He has an .867 postseason OPS, a 151 OPS+ over the last month, and a 140 OPS+ since the All-Star break. The rookie is hitting .333 against Martinez and has a 1.000 OPS and 202 OPS+ against the Rays this season. 

Shawn Krest's 2026 Transparency Record
  • Top picks: 89-66, +20.23 units
  • Combos: 0-3, +0.0 units
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Rays vs Guardians weather

This might be the story of the series. Thursday's game was moved from night to early afternoon to get ahead of the weather, and tonight's game will likely be played after all-day rain, with more showers expected throughout the evening. Delays are possible, and so is a straight-up postponement. It will affect lineups, pitching plans, and early strategy.

Rays vs Guardians odds

  • Moneyline: Rays 51% | Guardians 50%
  • Run line: Rays -1.5 (36%) | Guardians +1.5 (65%) 
  • Over/Under: Over 6.5 53% | Under 6.5 (48%)

Rays vs Guardians trend

The Over is 4-0 in the Rays' last four after scoring two runs or less in their previous game. Find more MLB betting trends for Rays vs. Guardians.

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How to watch Rays vs Guardians and game info

Location Progressive Field, Cleveland, Ohio
Date Friday, October 16, 2026
First pitch 8 p.m. ET
TV TBS
Rays starting pitcher Nick Martinez
(15-6, 3.10 ERA)
Guardians starting pitcher Shawn Armstrong
(0-0, 0.00 ERA)

Rays vs Guardians latest injuries

Odds are correct at the time of publishing and are subject to change.
Not intended for use in MA.
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Shawn Krest
Betting Analyst

Since quitting his job as bank assistant vice-president in 2000, Shawn has covered Final Fours, Super Bowls, World Series games and title fights in boxing and UFC. His work has appeared on ESPN, MLB.com, Sports Illustrated and dozens of other outlets. His book, Baseball Meat Market was published in 2018. He lives in North Carolina with his dog Toby, eight turtles, and wife.

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