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. As always, we won't be including today's game at Coors Field here. The over/under is 11 for a reason, and you don't need me to tell you to get exposure there. Here are the other teams you should be targeting in daily fantasy baseball today.

Oakland Athletics

Sean O'Sullivan's five starts at Triple-A were superb prior to his promotion for the Boston Red Sox, so the enthusiasm here isn't as high as it would have been last year. Still, the Oakland Athletics are a cheap stack playing in a great park, so it should be a solid test of O'Sullivan's progression.

The righty made 13 starts for the Philadelphia Phillies last year, resulting in a 5.18 SIERA thanks to a 10.7% strikeout rate and 41.5% ground-ball rate. He was able to limit his walks with a 6.1% walk rate, but the strikeouts supplied enough base runners to give the opponent a solid floor-ceiling combo. He was able to amp the strikeouts up to 24.6% in Triple-A, but it's hard to back off completely from a potential stack without seeing that against big-league batters.

O'Sullivan was wretched against left-handed hitters last year with a 6.36 xFIP, so you should favor the lefties, but this is also an intriguing spot for Khris Davis. Davis has had issues making contact this year (and his entire career), but O'Sullivan had just a 12.4% strikeout rate against righties last year. That could allow Davis to strike a ball with his 40.7% hard-hit rate and 44.2% fly-ball rate, and when that happens, he can do things like this.

That'll work. The lefties certainly get a boost, but so do the high-strikeout sluggers like Davis, who normally have trouble making contact.