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Read Article Reds vs. Rays prediction: Why Cincinnati is favored to win Tuesday's MLB matchup [4/21/2026]
Updated: | First published:
Written by Jason Bevilacqua, Head of Content and Communities
Get Cincinnati Reds vs Tampa Bay Rays predictions for MLB Tuesday.
The Tampa Bay Rays will take on the Cincinnati Reds, in what is expected to be a close MLB game, at Tropicana Field on Tuesday, starting at 6:40 PM ET.
The Rays will start Steven Matz (3-0, 3.80 ERA), up against Chase Burns (1-1, 2.42 ERA) for the Reds.
Based on updated simulations, Dimers' proven MLB model gives the Reds a slight edge with a 51% win probability over the Rays.
This article offers a closer look at Tuesday's Reds vs. Rays matchup, including best bets and picks.
Reds vs. Rays prediction: Who will win and cover?
Using innovative machine learning and statistical analysis, we have simulated the outcome of Tuesday's MLB game between the Reds and Rays, forming part of our MLB predictions coverage.
Our leading predictive model gives the Reds a 51% chance of defeating the Rays.
According to our model, the Rays (+1.5) have a 61% chance of covering the run line, while the over/under total of 7.5 runs has a 53% chance of going over.
Reds vs. Rays odds [4/21/2026]
We have sourced the best MLB odds in America for this game, which are listed here:
| Bet Type | Reds | Rays |
|---|---|---|
| Run Line | -1.5 (+150) | +1.5 (-180) |
| Moneyline | -110 | -102 |
| Total | o7.5 (-107) | u7.5 (-105) |
All odds are correct at the time of publication and are subject to change.
Reds vs. Rays picks and best bet
After matching our predictions against the best current odds, we can reveal our picks for each of the major markets. Plus, find our best bet for the game below:
| Bet Type | Pick | Bet Now |
|---|---|---|
| Run Line | Reds -1.5 | +150 |
| Moneyline | Reds | -110 |
| Total | Over 7.5 | -107 |
According to our MLB best bets, the top play to make on this game is Over 7.5 total runs.
These picks are based on our probabilities matched against the implied probabilities from the sportsbook odds.
Reds vs. Rays game-day updates and essential details
Tuesday's MLB game between the Rays and Reds at Tropicana Field is scheduled to commence at 6:40 PM ET.
- Who: Cincinnati Reds vs. Tampa Bay Rays
- Date: Tuesday, April 21, 2026
- Time: 6:40 PM ET/3:40PM PT
- Venue: Tropicana Field
Conclusion
We predict the Reds, with a 51% win probability, will likely beat the Rays in Tuesday's MLB matchup.
Additional tools and information for betting safely can be found in our Responsible Gambling hub.
Jason Bevilacqua, an expert in MLB, NHL, NBA, MLS, and NFL, delivers game previews, best bets, and props. Since 2020, as Head of Social and Community at Dimers, he has contributed insightful articles utilizing data-driven models and simulations.
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