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.

Oakland Athletics

The Oakland Athletics have everything we want in a stack tonight, packing plenty of home run upside and proving us with some nice values against Mike Fiers. Fiers is putting up a mediocre 4.47 SIERA and 17.3% strikeout rate, but most importantly, he's allowing 1.85 home runs per nine innings off a 35.3% hard-hit rate and 44.2% fly-ball rate.

Dustin Fowler ($2,700) and Matt Joyce ($2,600) get us off on the right foot as two cheap lefties who should man the top two spots in the order. Fowler is showing some nice promise with a 45.8% hard-hit rate and 38.5% ground-ball rate, while also adding some stolen base upside. Joyce has hit righties well his whole career (121 wRC+).

Khris Davis ($4,200) and Matt Olson ($3,800) bring that massive dinger potential, with Davis carrying an impressive .271 isolated power (ISO), while Olson is producing a league-best 53.4% hard-hit rate to go with a 44.6% fly-ball rate. Against right-handed pitching, they're posting expected weighted on-base averages (xwOBAs) of .446 and .414, respectively. Jed Lowrie ($3,800) doesn't have quite the same power, but he's produced a .360 wOBA and .196 ISO versus righties since the beginning of 2017, making him a solid third base option.

Stephen Piscotty ($2,800) bats lower in the order, but he's another potential value, putting up a .372 xwOBA and 45.4% hard-hit rate against right-handed pitching this year.