Stacking is an integral part of daily fantasy baseball. Correlation drives upside, giving your lineups a slate-winning ceiling when your stacks explode.

This piece will do the digging and the dirty work each day to determine which stacks are worth rostering on FanDuel's main slate. While we want upside, we also need to factor in game theory, especially in a sport as random as baseball.

The MLB DFS heat map at numberFire is a quick way to get a feel for the overall slate and which offenses are in a good spot. You can also check out our daily fantasy baseball projections -- which are powered by numberFire -- to identify the slate's best bats.

Let's look at the top stacks for today's main slate.

MLB DFS Stacks

Los Angeles Dodgers

Implied Total: 4.67 | Opposing Pitcher: Cody Poteet

It's a bad slate for offense tonight. There are no implied totals above 4.80, and only three teams have an implied total above 4.60. On top of that, I'm not in love with the offense that owns the top implied total -- Houston Astros (4.77) -- because I think their matchup with Griffin Canning isn't a cakewalk.

In my eyes, the Los Angeles Dodgers are the clear-cut top stack today in a Yankee Stadium clash with Cody Poteet.

Poteet is 29 years old but has thrown only 69 2/3 MLB innings in his career. He's mostly been decent, sporting a career 4.33 SIERA, but in 33 1/3 Triple-A frames this season, he mustered a pedestrian 9.7% swinging-strike rate. In his career, Poteet has permitted 1.91 homers per nine to left-handed hitters.

In short, Poteet isn't that good. On the flip side, the Dodgers' offense is very good.

You don't need me to tell you Shohei Ohtani ($4,300), Mookie Betts ($4,000) and Freddie Freeman ($3,800) are LA's top dogs. If you have the salary to jam in all three -- using Lance Lynn ($7,500) at home against the Colorado Rockies can help in that department -- you should. Ohtani boasts +230 odds to hit a home run, per FanDuel Sportsbook's MLB odds.

Will Smith ($3,700) is a stud, as well, and Teoscar Hernandez ($3,100) comes at an easy-to-like salary. Andy Pages ($2,900) is an interesting value who is red-hot, mashing his way to a .470 wOBA over the last eight games (32 plate appearances). Jason Heyward ($2,700) is another good value who is in sparkling form. The veteran has a .423 wOBA since coming off the IL on May 17th (44 plate appearances), but he will likely get pulled for a pinch-hitter if he faces a southpaw later in the game.

Seattle Mariners

Implied Total: 4.65 | Opposing Pitcher: Daniel Lynch

The Seattle Mariners have struggled offensively this year. I'm hoping that scares away the masses today, because they're in a good spot versus left-hander Daniel Lynch and are showing a solid 4.65 implied total

In 64 1/3 innings since the start of 2023, Lynch has pitched to a 5.09 SIERA with a lowly 15.6% strikeout rate. Over Lynch's career, righties have tagged him for a .347 wOBA, 37.6% hard-hit rate and 40.9% fly-ball rate. That's where our focus should be, and Seattle will likely start eight guys who will swing from the right side versus Lynch.

In my eyes, Julio Rodriguez ($3,400) is one of the key decision points on this slate. Early draft percentage projections around the industry have the star outfielder being really popular, and it's easy to see why as he'll have the platoon advantage, is salaried modestly and carries a .365 wOBA versus southpaws in 2024. However, Julio isn't having a good year overall, struggling to a .295 wOBA with a career-high 27.9% strikeout rate and career-worst 32.8% hard-hit rate. For me, I'll be stacking the Mariners without Rodriguez, assuming he's still expected to be chalky once we get closer to lock.

Dylan Moore ($2,900), Ty France ($3,000), Cal Raleigh ($2,800), Mitch Haniger ($2,600) and Mitch Garver ($2,600) are the Seattle bats I'm most interested in. Given their salaries, the Mariners are a nice stack to pair with the Dodgers. Moore is projected to bat second and is eligible at all of second base, shortstop, third base and outfield, making him a handy puzzle piece.

St. Louis Cardinals

Implied Total: 4.24 | Opposing Pitcher: Austin Gomber

If you don't like the idea of stacking a bad Seattle offense, let me sell you on stacking an equally bad St. Louis Cardinals offense, one with an even lower implied total (4.24) than Seattle's.

The big draw here is a date with Austin Gomber. The Rockies' lefty has been better this year than he was in 2023, but it's still amounted to pretty blah numbers, including a 4.60 SIERA, 17.1% strikeout rate and 1.61 homers per nine. He has a 5.02 FIP on the road, so the bad numbers aren't all Coors related.

Due to the Cards' offensive woes, they're mostly all at manageable salaries, which makes them another team that fits well next to Dodgers stacks.

Nolan Arenado ($2,800), Paul Goldschmidt ($2,800), Masyn Winn ($3,100) and Ivan Herrera ($2,600) should occupy four of the first five spots in St. Louis' lineup, and each of them will have the platoon advantage against Gomber. Arenado has been much better at home this year (.349 wOBA) than on the road (.279 wOBA). Winn has been one of the few bright spots for this team and is posting a .349 wOBA with three jacks and eight steals.

Nolan Gorman ($3,400) and Alec Burleson ($2,800) lose some luster in a lefty-lefty matchup, but both offer big-time power. Gorman has been absolutely cooking of late, racking up a massive .537 wOBA and four taters so far in June.

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The above author is a FanDuel employee and is not eligible to compete in public daily fantasy contests or place sports betting wagers on FanDuel. The advice provided by the author does not necessarily represent the views of FanDuel. Taking the author's advice will not guarantee a successful outcome. You should use your own judgment when participating in daily fantasy contests or placing sports wagers.