Weather to Watch
Washington at Atlanta | Truist Park | Overcast, 86F | Wind: 9.5 mph S
Wind blowing out to center with 86 degree heat is the slate's clear hitter boost, lifting Truist HRs roughly 8%. There is a 30% chance of a passing storm to track late, but nothing on the radar that looks like a tarp risk right now.
Detroit at Baltimore | Oriole Park at Camden Yards | Overcast, 57F | Wind: 5.2 mph E
This one has the highest weather red flag on the slate. Precip chance is 65% and the entire region is sitting under heavy overcast. Camden's HR factor still leans hitter, but until first pitch is in the books I would not anchor a lineup to either side of this one.
Tampa Bay at NY Yankees | Yankee Stadium | Overcast, 62F | Wind: 9.7 mph ESE
Wind blowing in from right field is a real headwind on Judge and Rice's pull power. HR impact drops about 7% in the Bronx tonight. The short porch still exists, but the math tilts toward the pitchers more than usual.
Most domes and the rest play neutral
Toronto, Miami, Milwaukee, and Arizona are all closed roof domes with no weather variance. Kansas City, Boston, San Diego, Anaheim, and San Francisco all sit in the small single digit window either direction and do not move the needle. No need to overthink them.
HR Calls
Matt Olson (ATL) $5,400 vs Miles Mikolas
Olson is the cleanest power play on the slate. Mikolas owns an 8.28 ERA across 25 innings for Washington with a 2.52 HR/9, and lefties have crushed him for a .398 wOBA and a 24% HR/FB rate. Olson is running a .322 ISO and 16.3% barrel rate, and his vs RHP profile shows a 168 wRC+ with a 25.6% HR/FB rate of his own. Wind blowing out at Truist with 86 degree heat and an 8% park and weather HR bump finishes the case.
Mark Vientos (NYM) $3,200 vs Eury Pérez
This is the textbook contrarian profile. Vientos owns a .240 xISO that materially outpaces his .155 actual ISO, which is the model flagging bad luck on contact quality, not bad skill. The matchup amplifies it. Pérez has been crushed by right-handed bats specifically and Vientos hits righty, with the Cuban-born right-hander posting a .399 wOBA, a 24% HR/FB rate, and a 43% hard contact rate to that side across 23 innings. His season HR/9 sits at 1.72. loanDepot's dome takes weather out of play but it does not stop loud contact, and Vientos at $3,200 is a true salary cheat with single-digit projected ownership.
Daulton Varsho (TOR) $3,700 vs Bubba Chandler
Chandler's 5.14 season ERA already tells the story, but the underlying stuff is louder: 5.65 xFIP, 5.84 FIP, a 1.50 HR/9, and a 17% walk rate that is putting hitters in counts where they can sit fastball. Over his last 30 days the ERA has ballooned to 6.95. The lefty side is where the real damage gets done against him too, with LHH putting up a .368 wOBA and a 15.6% HR/FB rate. Varsho bats from the left side, hits in the 3-hole, and brings a 122 wRC+ vs RHP into Rogers Centre's dome environment that plays as a 115 park factor for lefty pull power. Single-digit ownership at this price is the leverage piece.
Stacks to Target
1. ATL vs Miles Mikolas (R) | Implied Total: 5.97 | ROO Score: 7.3/10
This is the highest implied total on the board and the model has Atlanta's starter vulnerability score sitting at 7.3 with the stack leverage score pinned at a perfect 10. Mikolas is the worst SP on the slate by a wide margin, allowing a .398 wOBA to lefties and a .344 wOBA to righties with HR/FB rates near 24% on both sides. The Atlanta lineup is the rare team that does not care which way the pitcher tilts because both sides of their order produce, but the lefty side has the slate's best matchup once you layer in 86 degree heat and the wind blowing out at Truist. Atlanta also draws the chalk tier in ownership, so the question is construction more than whether to be in. Stack the top of the order and run a one-off bring-back from Washington's lineup if you want to fade the room.
Core pieces: Matt Olson (L, 3-hole) for the elite vs RHP profile, Ronald Acuña (R, leadoff) at $5,700 with a 23.5% barrel rate when right, Austin Riley (R, cleanup) at $4,300, and Dominic Smith (L, 6-hole) at $3,700 as the salary saver who is quietly running a 163 wRC+ vs RHP this year.
2. ARI vs Tomoyuki Sugano (R) | Implied Total: 5.43 | ROO Score: 6.7/10
The model's starter vulnerability score on Sugano lands at 9.0 here and there is good reason: his FIP and xFIP are nearly a full run worse than his ERA, his K rate has collapsed to 9% over his last 30 days, and lefties have ripped him for a .405 wOBA with an 18.8% HR/FB rate. That sets up Carroll and Marte from the switch and lefty side as the highest leverage Diamondbacks, but the matchup tilts so far that even Arenado, who is a righty, is profile-clean here given his 132 wRC+ vs RHP and the Chase Field indoor environment. Stack leverage scores out to 8.8 and the chalk note tags ARI as a top-two ownership team along with Atlanta, so this is a stack you will see in plenty of lineups. The right play is leaning into it for cash but mixing your lineup with a contrarian bring-back from Colorado in GPPs.
Core pieces: Corbin Carroll (L, 2-hole) at $5,800 with a 125 wRC+ and 17.1% HR/FB vs RHP, Ketel Marte (S, leadoff) at $5,300 hitting righty against Sugano with a 19.8% ISO, Nolan Arenado (R, cleanup) at $3,500 as the salary cheat, and Geraldo Perdomo (S, 3-hole) at $4,500 for the down-lineup leverage.
3. TEX vs Grayson Rodriguez (R) | Implied Total: 4.55 | ROO Score: 5.8/10
The interesting wrinkle here is that Rodriguez is making his first start back from the IL, and the only Major League data we have on him this year is 3.2 innings of a 17.18 ERA from his rehab outing. The model gives Texas a starter vulnerability score of 7.0 and a bullpen vulnerability of 7.5, which is the slate's best combined number. The Angels' relief corps has been a sieve to RHB, and Texas's right-handed bats post a 106 wRC+ vs RHP behind Jung and Duran. This is a GPP-leaning stack because the upside is real but the floor is shakier than the other two anchors above. If Rodriguez's velocity looks right in the first inning, this is a 5-run game. If it does not, the bullpen is the path.
Core pieces: Josh Jung (R, 3-hole) at $4,200 with a 146 wRC+ vs RHP and a .382 wOBA, Ezequiel Duran (R, 5-hole) at $3,900, Jake Burger (R, 7-hole) at $3,500 with a 20% HR/FB vs RHP for the punt power piece, and Brandon Nimmo (L, 2-hole) at $4,500 as the lefty anchor for some balance.
Pitchers
deGrom is the slate-defining ace at $9,500 and the projected chalk magnet, but there is a real value tier underneath him where ownership splits and roster construction get interesting. The mid-priced arms have the K upside to break a slate open without forcing you into a Big Bat squeeze.
Jacob deGrom (TEX) vs LAA | $9,500 | CASH
The implied total against him sits at 2.95, which is the slate's lowest. deGrom is at 3.02 ERA and 3.05 xFIP across 50 innings with a 31% K rate and a 1.7% walk rate, so the strikeout floor and ratio safety are both elite. Yes he is going to be 35%-plus owned, but cash games are about hitting projections and his ceiling matches his floor here. The only red flag is his 1.78 HR/9, and the wind in Anaheim is a mild 2% boost, so a solo shot is on the table.
Logan Gilbert (SEA) vs KC | $8,700 | CASH
Kauffman is a power suppressing park and Kansas City strikes out a healthy clip against right-handed pitching. Gilbert's xFIP is 3.54 even though his ERA sits at 4.45, his K rate is 25%, and his walk rate is 5%. He has run into some HR variance recently, but Kauffman should help cap that. Pay the salary if you want to fade deGrom chalk and still hit ceiling.
Davis Martin (CHW) at SF | $8,400 | GPP
The slate's best leverage SP. Martin owns a 1.61 ERA across 56 innings with a 2.39 FIP and a 2.99 xFIP, a 27% K rate, and only a 4.7% walk rate. Oracle Park is one of the most pitcher-friendly venues in baseball and the San Francisco lineup is hitting 81 wRC+ vs RHP. Projected ownership is sitting in the mid single digits while the underlying profile is comfortable inside the top three on the slate. This is exactly the kind of GPP arm that wins tournaments when the chalk SP gives up a four-spot.
Payton Tolle (BOS) vs MIN | $8,900 | GPP
Tolle's 2.05 season ERA is largely BABIP magic (.189 BABIP, 67% LOB), but the K-rate is real at 26% and the underlying skills against right-handed bats are excellent: a .192 wOBA allowed to RHB across 23 innings with a 29% K rate. Minnesota's lineup is right-handed heavy and they have not been hitting lefties. Fenway slightly suppresses HRs tonight with light wind in, which lines up the Green Monster scenarios in his favor.
Kevin Gausman (TOR) vs PIT | $8,300 | CASH
Pittsburgh's implied total is 3.21 and Gausman's full-season ratios sit at 3.45 ERA, 3.08 FIP, 3.44 xFIP. The Pirates have one of the worst lineups in the league against right-handed pitching, and the Rogers Centre dome takes weather out of the equation. He does not have the explosive K rate of deGrom or Tolle, but the floor here is steady and ownership is in the mid teens.
Pitcher Regression to Watch
The slate has multiple starters whose ERA is wildly disconnected from their underlying profile. Sample size is no longer the early-season caveat at this point in the year, so the regression signal is reliable for the names listed below.
Nick Martinez (TB) at NYY - Negative Regression Candidate
Martinez's 1.51 ERA is the biggest mirage on the slate. His FIP is 3.25, his xFIP is 4.23, and his strand rate is sitting at a comical 91%, which is roughly nine percentage points above league average. His K rate of 16% is below average and his stuff is not the kind that supports a sub-2.00 ERA over a full season. Yankees is the right side to be on tonight. Their lineup hits both sides well and Yankee Stadium is a 115 park factor against right-handed batters. Even with the wind blowing in, the lineup quality alone makes this a chase the math spot. Stacking 4-2 with NYY rolling up and TB as the bring-back is a GPP angle that pairs with the regression case nicely.
Justin Wrobleski (LAD) at MIL - Negative Regression Candidate
Wrobleski's 2.12 season ERA is also unsustainable. His FIP is 3.42 and his xFIP balloons to 4.85, a gap that says the contact quality has been worse than the runs are showing. He runs a 13% K rate against lefties and his peripherals against righties have been propped up by a low BABIP. Milwaukee is dome-protected from weather but their right-handed bats including William Contreras (132 wRC+ vs RHP) and Brice Turang (192 wRC+ vs RHP) profile cleanly into this matchup. Not a top-tier stack target like Atlanta or Arizona, but a sneaky one to mix into a GPP build given the ownership will be very low.
Final Thoughts
The slate's cleanest cash foundation is deGrom at SP plus a single Atlanta anchor like Olson or Acuña. Both pieces project for top-of-slate ceilings on a slate where the rest of the player pool has real volatility, and deGrom owns the strikeout floor that holds cash lineups upright when bats go cold. From there, the most efficient way to deploy salary is to bring in the right-handed mid-tier bats with strong handedness splits, namely Jung at TEX and Carroll at ARI, before reaching for any third stack. Watch the Camden weather closely before lock. A 65% precip chance plus a Baltimore lineup full of late deck risk is the most volatile situation on the board, and a delay or postponement is in play. Have a pivot off Rutschman, Henderson, and Alonso ready before first pitch.
For GPPs the leverage tree is cleaner than usual. Davis Martin at SP is the most contrarian top-tier arm at $8,400 with a sub-2.00 ERA backed by real peripherals, and pairing him with the ARI stack lets you double up on chalk avoidance while still chasing the highest correlated runs on the slate. The Tampa Bay bring-back hitters into a regressing Nick Martinez are basically untouched ownership, and even single-spot exposure to Soto in the Mets dome game gives you a path that nobody else is taking. The Atlanta and Arizona stacks are going to be everywhere in the field, so if you build them, build them differently. Mix in a Smith or a Yastrzemski instead of a fourth Olson lineup, and use Arenado at $3,500 to free up salary for the SP combo.
MLB DFS Playbook | Friday, May 22, 2026 | DraftKings Main Slate | Vegas lines via
Tools used for this slate
Every number in this playbook comes off the free BankrollSZN tools: today's MLB DFS projections, the MLB home run predictor, first-pitch weather for every game, today's starting pitchers, and the free MLB lineup optimizer.