MLB Sleeper Fantasy Player Predictions for Thursday (8/21)
Thursday, August 21, 2025: Below are three of the best picks for today’s MLB slate on Sleeper Fantasy according to our projections team. Using factors like Statcast data, advanced sabermetrics, weather impacts, and environmental factors, every single pick is going to be based on what our projections say is a meaningful edge. Get access to all of these picks, including much more, by subscribing to the RotoGrinders Props & Pick’em package.
Don’t forget to check out our MLB weather page, which is curated by our Chief Meteorologist, Kevin Roth, to see how that may impact these picks as the day progresses. And you can always stay up to date on exactly what a team’s lineup is by heading to our MLB starting lineups page.
Below, I’ll detail how I’m approaching things on Sleeper Fantasy for this Thursday slate.
First… Sign Up to Make MLB Sleeper Fantasy Picks
If you want to play along but haven’t signed up yet, grab a special offer with our Sleeper Fantasy promo code “GRINDERS” to get a 100% deposit match up to $100! Sleeper Fantasy – one of the most popular DFS pick’em sites – provides player projections for MLB matchups each day. It is then up to the user to decide whether a player will ultimately exceed or fall short of those projections in the games. With a huge roster of players available from which to choose, we just need to make a minimum of two picks to build an entry.
When making your Sleeper picks today, let RotoGrinders do the heavy lifting for you!
Sleeper Fantasy Top MLB Picks for August 21, 2025
Now that you’re signed up, here are some of our top MLB DFS picks on Sleeper Fantasy for Thursday:
- Shota Imanaga less than 4.5 Pitcher Strikeouts
- Freddie Freeman less than 0.5 Batter Strikeouts
- Jason Alexander more than 5.5 Hits Allowed
Brewers vs. Cubs MLB Sleeper Fantasy Predictions
Shota Imanaga less than 4.5 Pitcher Strikeouts
The pitcher strikeouts projection for Shota Imanaga looks like a strong pick based on the current data. The Sleeper projection of 4.5 compares favorably based on our MLB simulations. This pick projects to hit 58.1% of the time based on the assumptions, and that represents a 6.0% edge.
Dodgers vs. Rockies MLB Underdog Predictions
Freddie Freeman less than 0.5 Batter Strikeouts
The batter strikeouts projection for Freddie Freeman looks like a strong pick based on the current data. The Underdog projection of 0.5 compares favorably based on our MLB simulations. This pick projects to hit 52.7% of the time based on the assumptions, and that represents a 5.1% edge.
Astros vs. Orioles MLB Sleeper Fantasy Predictions
Jason Alexander more than 5.5 Hits Allowed
The hits allowed projection for Jason Alexander looks like a strong pick based on the current data. The Sleeper projection of 5.5 compares favorably based on our MLB simulations. This pick projects to hit 54.2% of the time based on the assumptions, and that represents a 4.9% edge.
Editor’s Note: Looking for more places to play? Check out our Underdog promo code and PrizePicks promo code.
Image Credit: Imagn