MLB DFS Picks Today: Daily Fantasy Baseball Strategy and Tips For FanDuel, DraftKings (9/23/25)

Koby's top DraftKings and FanDuel MLB DFS picks for today, Tuesday, 9/23/25. His favorite daily fantasy baseball lineup sleepers and value picks for DFS on DraftKings and FanDuel.

Welcome Back, RotoBallers! We have just six games left in the regular season. So many playoff spots to clinch left as well. Only one team has clinched in the AL, and five teams have clinched in the NL. We have 11 games on this slate, and all but two of them have playoff implications of some sort.

At the moment, we are looking at solid weather across the slate, but that can always change. Keep up to date in our RotoBaller Discord or feel free to follow me @DFSKoby on X as I'm happy to help out if you have any questions!

This article will provide my daily fantasy baseball lineup picks for DraftKings and FanDuel on 9/23/2025, with the slate starting at 7:05 PM EST. The lineup picks will showcase elite players, mid-priced options, and value plays. You can also read more DFS advice and lineup picks for other sports here. Monitoring injury news and today's MLB starting lineups is always essential.

• 2025 fantasy football rankings
• Running back (RB) fantasy football rankings
• Wide receiver (WR) fantasy football rankings
• Tight end (TE) fantasy football rankings
• Quarterback (QB) fantasy football rankings
• FLEX fantasy football rankings
• Defense (D/ST) fantasy football rankings
• Kicker (K) fantasy football rankings
• Dynasty fantasy football rankings

DraftKings, FanDuel Pitchers - MLB DFS Lineup Picks

Logan Webb, SP - SFG ($9.8K DK/$9.8K FD)

Logan Webb has been elite this season for the Giants. He has been the clear ace for the team and has kept them in the playoff race. They may be three games back, but anything can happen in the final six games of the season. The Cardinals have been rough this month, sporting an 85 wRC+ and .288 wOBA against RHP.

The only pitcher since 2022 with 780+ IP and 700+ strikeouts:

Logan Webb 👀

One of the most underrated aces in the league. pic.twitter.com/Vm5jQ9jgBw

— Just Baseball (@JustBB_Media) September 9, 2025

Logan Webb has scored 35+ FP fantasy points in six of his last seven games, and in tough matchups against the Dodgers, Diamondbacks, Cubs, and Brewers. Webb has shown no issues going deep into games, either with three games of six innings or more in seven of his last nine starts. With possible playoffs on the line in this one, we need a gem from Webb here.

Bryce Miller, SP - SEA ($7K DK/$7.5K FD)

The Mariners are one of the hottest teams in baseball, and this rotation is firing on all cylinders right now. Bryce Miller has looked better in his last four starts and now gets an elite spot against the lowly Colorado Rockies. This game means more than anything for the Mariners, as a win here and a Yankees win locks the Mariners into a playoff spot. I'm expecting Miller to come out and have one of his best starts of the season.

The Rockies have been terrible against RHP this month, posting an MLB low 61 wRC+ and .277 wOBA. That number also drops to 23 in away games. The Rockies won't have the benefit of Coors Field in this one and will travel to a very pitcher-friendly park in Seattle. They also have a 27.1% K% with a very low 6.2% BB%. Miller is in an elite spot here against the Rockies, and we are getting him as the eighth-cheapest pitcher on the slate on FD.

Others To Consider (Cash/GPP):

• Cade Horton, SP - CHC ($7K DK/$8.9K FD)
• Hurston Waldrep, SP - ATL ($9K DK/$9.3K FD)

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DraftKings, FanDuel Infielders - MLB DFS Lineup Picks

Cal Raleigh, C  - SEA ($6.4K DK/$4.5K FD)

The Big Dumper is my Big spendup option on today's slate. He has been hitting extremely well, and now DraftKings has him tied in odds for the AL MVP. He has been so big for this Mariners team on this win streak. He has five home runs in his last seven games! He has double-digit fantasy points in seven of his last ten games as well. He is going up against the inexperienced McCade Brown for the Rockies.

Raleigh is sitting at 58 home runs on the year, and with six games to go, he looks to go for the AL record of 62 held by Aaron Judge. I don't know if he will get to 62, but I do think he gets to 60 before the season ends. Brown hasn't had as many hard hits from the left side, but is still posting a .514 SLG against them. Cal Raleigh is all power, and this Mariners team is hungry. I expect them to get Brown out early and take advantage of a bad bullpen.

Rafael Devers, 3B(FD)/1B  - SFG ($5.3K DK/$4K FD)

Hopefully, some of y'all caught my Home run article yesterday, where I called both the Rafael Devers and Ivan Herrera home runs. I'm going right back to Devers in this one against the poor Andre Pallante for the Cardinals. He is pretty expensive, but he has shown himself to be worth it. In his last 25 games, he has only finished with 0 fantasy points once in that time. He has found ways to get points in more than just hits. He has also seen his walk rate slowly increase.

Rafael Devers crushes one the opposite way to make it a 1-run game 👀 pic.twitter.com/HFKp0hAHcd

— MLB (@MLB) September 23, 2025

Against lefties, Pallante has been giving up a .331 wOBA with a .432 SLG this season. Lefties are hitting a bit harder than the righties, but both sides of the plate likely will have their way with him. He has a 5.48 ERA on the season and isn't a threat in the strikeout department with a poor 15% K%. Like I mentioned with Webb above, the Giants still have a playoff spot to play for; it's slim, but I don't expect them to stop fighting until it's over.

Ha-Seong Kim, SS(FD)/2B - ATL ($3.2K DK/$2.8K FD)

Ha-Seong Kim has been on fire across the last 10 games, earning a hit in all of them, with three of those games being a multi-hit games. He also has two home runs in that time. Kim has been big for this Braves team that has some glaring issues, and if he keeps it up, he might be back next year or with a better team. With Ozzie Albies getting injured, we likely see Kim move up a bit in the lineup and probably move to 2B for the time being.

September has been by far his best month with the Braves; his K% has dipped 6-10% compared to other months, and he has a .361 wOBA and .469 SLG this month so far as well. Brad Lord has been decent against RHB, but Kim is swinging a hot bat right now, and I'll take advantage of that all day.

Others To Consider (Cash/GPP):

• Nick Kurtz, 1B - ATH ($6K DK/$4.1K FD)
• Carlos Correa, SS/3B - HOU ($3.7K DK/$2.8K FD)
• Jac Caglianone, 1B(FD)/OF - KCR ($2.5K DK/$2.5K FD)
• J.P. Crawford, SS - SEA ($3.5K DK/$2.8K FD)

DraftKings, FanDuel Outfielders - MLB DFS Lineup Picks

Corbin Carroll, OF - ARI ($6.3K DK/$4.4K FD)

Corbin Carroll is just on an unreal run right now. He is pushing this team back into the playoff push, and I think we can all agree it would be great to see the Diamondbacks make it there. They are such a likable team, and even with all the hardships this season, they are right on the edge, being one game back from the Mets. Carroll is coming off one of his better games of the season with 44 fantasy points.

He has six or more fantasy points in his last 10 games! The only downside here is, he is going up against Shohei Ohtani. I don't think the Dodgers risk hurting him, though, and he only pitches a few innings in this one. The Dodgers have clinched a playoff spot and are really close to clinching the division as well. I don't see them taking any risks with Ohtani here. That being said, I think with how hot a bat Carroll has right now, it's too hard to fade him here in this spot.

Sal Frelick, MIL ($4.1K DK/$3.2K FD)

Sal Frelick struggled in last night's loss to the Padres that sent them to the playoffs, but before that. Frelick was on an eight-game hitting streak that also included two home runs. Frelick hasn't been known this season as a home run hitter, but he has definitely shown the power and has been great with RISP in recent games. He has nine RBIs within the last eight games as well. Against RHP, he has a .351 wOBA with a .449 SLG.

He is going against Randy Vazquez. Vazquez has been questionable this season, but has been healthy enough to keep a roster spot in this Padres rotation. Against lefties, however, he gives up a .344 wOBA with a .422 SLG and a concering 13.5% Barrel% to both sides of the plate. The Brewers are very close to clinching home-field advantage throughout the entirety of the playoffs. I don't expect them to take their foot off the gas now.

Dominic Canzone, SEA ($2.8K DK/$2.7K FD)

Dominic Canzone has been so big for the Mariners in their stretch. He has been able to get it done against RHP this season, where he is averaging .301 with a .509 SLG and .208 ISO. The kid has incredible power, and while everyone will be touting the top of the lineup, I'm gonna go with my guy Canzone here against the rookie RHP in McCade Brown.

Dominic Canzone is the 2nd player in @Mariners history to have a 5-hit, 3-homer game! pic.twitter.com/lOXnYTGJZE

— MLB (@MLB) September 17, 2025

Brown has been pretty bad in limited time this season, but lefties are killing him. They have a .464 wOBA and .514 SLG against McCade in his five starts. You would think it's just a Coors Field thing, but he has been hammered in Pittsburgh and San Diego for a combined six runs. Canzone is eating up righties and is relatively cheap compared to his Seattle teammates. If he hits a dinger, it's going to be incredible value.

Others To Consider (CASH/GPP): 

• Julio Rodriguez, OF - SEA ($4.3K DK/$4.1K FD)
• Christian Yelich, OF - MIL ($5.1K DK/$3.9K FD)
• Jurickson Profar, OF - ATL ($4.8K DK/$3.8K FD)
• Heliot Ramos, OF - SFG ($3.6K DK/$3.1K FD)
• Austin Martin, OF - MIN ($3.5K DK/$2.7K FD)

DraftKings, FanDuel MLB DFS Stacks

1. Seattle Mariners (Implied Run Total - TBD) vs McCade Brown

This Seattle Mariners team is on a tear right now, and even though T-Mobile Park isn't a hitters' park, this Mariners team has had no issue scoring, let alone getting a win. They have won 14 of their last 15 and now go up against McCade Brown for the Rockies. The Mariners have posted a wRC+ of 135 against RHP, which is good for second-best this month. Brown has given up 18 runs in his first five starts. Mariners need a win to get one step closer to winning the division. They should get the job done here.

Favorite Combo: Raleigh, Rodriguez, Suarez, Canzone

2. Atlanta Braves (Implied Run Total - 5.4) vs Brad Lord

This game doesn't matter for any reason at all. Both teams are eliminated, but maybe that's good for us. These guys should just go out there and finish the season strong. There is no reason not to. The Braves are lined up in a good spot against Brad Lord, who holds a 4.26 ERA on the season, but has been specifically hit hard by the lefties this season. The Braves have their fair share. Hopefully, they finish the season strong.

Favorite Combo: Profar, Olson, Baldwin, Kim

2. San Francisco Giants (Implied Run Total - 4.5) vs Andre Pallante

Andre Pallante has been one of the worst pitchers in baseball. Across his last nine starts, he has given up 34 earned runs and has only been able to go more than five innings once. The Giants could potentially make a playoff spot, albeit unlikely, they should still be fighting with the season on the line. They have a wRC+ of 95 this month against RHP. With a good matchup like this one, hopefully, they take full advantage of it.

Favorite Combo: Devers, Lee, Ramos, Adames

More Fantasy Baseball Analysis