The rookie call-ups have really shaken up lineups around the league, creating much more unknown. We will work with logic and reason to construct lineups. Commentary based on DraftKings strategy and scoring.

The sneakiest stack of the day is certainly the Seattle Mariners. Most owners stay away from any offense at Safeco Field, but this scenario is really good for the M’s. They are swinging it well right now, with the 6th best wOBA in the L14 and they have cut their strikeouts by a few percentage points off their normal numbers. They are also going to get Jared Weaver who’s 5.76 xFIP is second worst on this slate of anyone with a decent sample size. His strikeouts are bordering on an all-time low and he’s actually been a little “lucky” with his HR/FB rate. It’s about 4% lower than we’d expect so if it corrects itself, he’s inline for some additional long balls.

A few of my favorite Mariners include Robinson Cano ($3,900) and Kyle Seager ($4,100). Seager has been scorching, hitting .375 with 3 HRs in the L14. Unfortunately, he’s struggled off Weaver, hitting .200 (6-30) in his career. Flip the script for Cano who’s struggling recently (.245 in the L14) but has great career numbers off Weaver (.366, 15-41).

Remember when Jason Heyward ($3,500) cost $4,300? You should, because it was yesterday! An inexplicable price drop on Heyward who has multi-hit games in four straight games including two doubles and a HR last night! Heyward is going to get a big boost from Miller Park, which surrenders 27% more HR to LHB than the leaguer average. Also a career .353 (6-17) hitter off Wily Peralta. All around, he’s one of my favorite plays on the slate.

If you are a glutton for punishment, consider Chris Carter ($3,500) as a first base punt. Carter is highly volatile and hasn’t been playing a ton lately. He did play last night and had an RBI double. If he can parlay that into a start tonight, he has good career numbers off Martin Perez, hitting .462 with 2 HRs in 13 ABs. You’ll have to be sure he’s in the lineup and for GPPs only!

The BvP “winner” of the day is another St. Louis Cardinal, this time it’s Matt Carpenter ($4,200). Althought he’s scuffled in the L14, only hitting .233, a date with Wily Peralta might be just the medicine he needs. Carpenter is 13-30 (.433) with two HRs in his career off Peralta.

Follow DFS On Demand on Twitter (@DFSOnDemand) for more tips, strategy, previews and more! If you’re new to DFS, please use our link to sign up and play on DraftKings.