Stacking can be a controversial topic in many daily fantasy sports, but you can count baseball as a glaring exception. Here, it's universal.

Using multiple players on the same team on a given day presents you with the opportunity to double dip. If one of your players hits an RBI double, there's a good chance he drove in another one of your guys. When you get the points for both the run and the RBI, you'll be climbing the leaderboards fast.

Each day here on numberFire, we'll go through four offenses ripe for the stacking. They could have a great matchup, be in a great park, or just have a lot of quality sticks in the lineup, but these are the offenses primed for big days that you may want a piece of.

Premium members can use our new stacking feature to customize their stacks within their optimal lineups for the day, choosing the team you want to stack and how many players you want to include. You can also check out our hitting heat map, which provides an illustration of which offenses have the best combination of matchup and potency.

Now, let's get to the stacks. Here are the teams you should be targeting in daily fantasy baseball today.

Seattle Mariners

Mike Pelfrey's current form is actually not bad as he has been limiting hard contact so well recently, but do you think we're going to pass up a shot to stack the Seattle Mariners on the road against a below-average starter? Heck to the naw, home slice. They're way too good for that.

Over his past six starts, Pelfrey has re-upped his average fastball velocity to 93.1 miles per hour, and it has paid off gloriously with a 21.4% hard-hit rate in that span. We can hold off on hailing him as our new overlord because four of those starts have come against bottom-four teams in hard-hit rate against righties, and none of the six starts have come against a team that's higher than 21st in the stat. The Mariners are 10th in hard-hit rate and third in wRC+, so there's a wee bit of a gap there that we can exploit.

The other reason the Mariners get us all hot and bothered is Pelfrey's main bugaboo has been left-handed batters. They've got one or two of those. His strikeout rate falls to 9.5% when facing a lefty, and their hard-hit rate jumps up to 32.4%. That means we can feel good about dipping a bit lower in the order to snag saucy lefties like Kyle Seager and Adam Lind, who should benefit from Pelfrey's low-strikeout ways in the form of base runners aplenty throughout the game.