4 Daily Fantasy Baseball Stacks for 4/21/15

Mediocre pitchers in hitter's ballparks? The runs are ready to flow for tonight's slate, especially for these teams.

Each day here on numberFire, we'll be providing you with four potential offenses to stack in your daily fantasy lineups. These are the offenses that provide huge run potential on that given day based on matchups and other factors.

After reading through these suggestions, make sure to check out our daily projections. These can either let you know which players to include in each stack, or which guy best complements said stack.

Another great tool is our custom optimal lineups, which are available for premium subscribers. Within the tool, we've added the option to stack teams -- you choose the team you want to stack, show how many players you want to use within the stack, and the tool will create a lineup based on this that you can then customize.

Now, let's get to the stacks. I'm not going to include the Padres and Rockies at Coors Field in here because y'all are smart enough to know that you should stack them if you can afford it. Here are the other teams you should be targeting in daily fantasy baseball today.

Baltimore Orioles or Toronto Blue Jays

There. Will. Be. Runs. You can stack the O's (Adam Jones versus a lefty, ya boi!) or the Jays (those boppers versus a fly-ball pitcher), but you should probably have ownership in this game regardless.

In the opening week, Mark Buehrle did hold the Orioles to two runs over six innings. However, he also allowed eight hits, walked two dudes, and struck out only one. His strand rate was 93 percent (it was 96.2 percent in his second start), but the league average there is 72.8 percent. That's unsustainable. With a FIP north of six, homie is due to see his 3.75 ERA rise. The Orioles are just the team to oblige.

As for the Blue Jays, I know that Edwin Encarnacion is in a slump. I get it. But how on Earth does he only cost $4,500 on DraftKings? Today, he gets Bud Norris and his below average ground-ball rate at the Rogers Centre. There is so much yumminess in there for such a sweet salary. It's a no-brainer for me, which means he's definitely going 0-4 with three strikeouts.

New York Yankees

Kyle Lobstein is a really bad name for a pitcher. It is fitting, however, for a guy that tops out in the high 80's with his fastball. The Yankees could have fun with that in a game that has an over/under of nine.

Lobstein had a projected ZiPS ERA of 5.21 entering the season. In his first start this year against Cleveland, he allowed three runs on eight hits with two walks and three strikeouts in five innings. He didn't get rocked, but 10 base-runners in five innings is sub-optimal. Now, he gets paired with a team that has several guys that mash lefties in a park that is a friend of the long-ball. Prognosis negative, home skillet.

The two main lefty-assassins in the lineup last year were, semi-surprisingly, Jacoby Ellsbury and Brian McCann. For Ellsbury, last year was the first time he had a higher wOBA against lefties than righties since 2009, but his success was eye-popping. He hit .300/.355/.472 in 197 plate appearances. He has followed that up by getting on base in half of his first 16 plate appearances against south paws this year.

It was the same story for McCann last year. He had always been at least slightly partial to batting left-handed, but 8 of his 23 home runs last year came from the right-hand side. He had a .292/.324/.526 slash against lefties and had a .623 slugging percentage at home in that situation. With this game in Yankee Stadium, it's full-blown crush mode for the Bronx Bombers.

Arizona Diamondbacks

Regression, thy name is Nick Martinez. Through two starts, Martinez is yet to allow an earned run. That's awesome! But opponents also have a .214 BABIP against him, and he has stranded 93.3 percent of base-runners (one unearned run scored). He will eventually succumb to the Siren song of reality.

The other thing that makes Martinez endlessly stackable in Arizona is that he and the ground ball have largely failed to coexist. His 32.9 ground-ball percentage last year assisted in his allowing 18 home runs in 140.1 innings pitched. That's Jack City, pitch.

When Martinez's regression occurs, the D'Backs should be right there waiting. Paul Goldschmidt's price is an ungodly $5,900 on DraftKings, but he's the only player in this game priced above $5,000. There's value to be had in the players around him.

Minnesota Twins

Stack the Twins? Stack the Twins! This is totally not as dumb as it sounds. Promise. Sort of.

The Twins have faced a left-handed starter five times this year. One of those was against Chris Sale and another was David Price. Those two were no bueno. But in the other three, facing lower-level lefty pitching, the Twins have eaten.

In those three starts, the opposing starters have lasted a total of 15 innings. They have allowed 13 runs, 12 of which have been earned, with only four walks and six strikeouts. Those are Twins-rotation-esque numbers. This string of blurghness includes the last start that Jason Vargas made, in which he allowed four earned on 10 hits in three innings. He's driving that struggle bus, yo, and now he gets the Twins again.

Brian Dozier should be in your lineups even if you break my heart and decide not to stack the Twins. He had a .351 wOBA against lefties last year with his .467 slugging percentage. Trevor Plouffe hit them at a .278/.353/.430 clip, so he's not a bad play, either.