MLB Underdog Fantasy Player Predictions for Tuesday (9/30)
Tuesday, September 30, 2025: Below are three of the best picks for today’s MLB slate on Underdog 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 Underdog for this Tuesday slate.
First… Sign Up to Make MLB Underdog Fantasy Picks
If you want to play along but haven’t signed up yet, grab a special offer with our Underdog Fantasy promo code “GRINDERS” to unlock a generous bonus. Underdog 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 MLB Underdog picks today, let RotoGrinders do the heavy lifting for you!
Underdog Fantasy Top MLB Picks for September 30, 2025
Now that you’re signed up, here are some of our top MLB DFS picks on Underdog for Tuesday:
- Tarik Skubal higher than 18.5 Outs
- Nick Pivetta higher than 15.5 Outs
Tigers vs. Guardians MLB Underdog Predictions
Tarik Skubal higher than 18.5 Outs
The outs projection for Tarik Skubal looks like a strong pick based on the current data. The Underdog projection of 18.5 compares favorably based on our MLB simulations. This pick projects to hit 54.7% of the time based on the assumptions, and that represents a 2.1% edge.
Padres vs. Cubs MLB Underdog Predictions
Nick Pivetta higher than 15.5 Outs
The outs projection for Nick Pivetta looks like a strong pick based on the current data. The Underdog projection of 15.5 compares favorably based on our MLB simulations. This pick projects to hit 51.4% of the time based on the assumptions, and that represents a 2.0% edge.
Editor’s Note: Looking for more places to play? Check out our PrizePicks promo code and Sleeper promo code.
Image Credit: Imagn