MLB SLATE

MLB Slate for May 21

The slate for Thursday, May 21, 2026 has 7 games, each with its probable starters, FanDuel lines, weather and ballpark. This slate came before the experimental MLB specialists began on September 30, 2026.

ParlayLab’s blanket moneyline, run-line and total picks were retired on September 30, 2026. MLB selections now come from 13 experimental specialists, decided before first pitch and logged at the price they were recorded at. See the specialists and their records.

Cleveland Guardians at Detroit Tigers

1:10 PM ET

Guardians (29-22) visit the Tigers (20-30). Probable starters: J. Cantillo (3.81) for Guardians, C. Mize (3.69) for Tigers. Weather at first pitch: 72°F.

Pitchers

CLEJ. Cantillo (3.81)

DETC. Mize (3.69)

FanDuel Lines

MLCLE — · DET —

RL—

Total—

MLB Specialists

Experimental

No specialist selection

Before the specialists began on Sep 30, 2026.

Research selections logged before first pitch, not betting-validated.

Pittsburgh Pirates at St. Louis Cardinals

1:15 PM ET

Pirates (25-24) visit the Cardinals (28-20). Probable starters: B. Ashcraft (3.59) for Pirates, D. May (4.70) for Cardinals. Weather at first pitch: 64°F, 7 MPH wind.

Pitchers

PITB. Ashcraft (3.59)

STLD. May (4.70)

FanDuel Lines

MLPIT — · STL —

RL—

Total—

MLB Specialists

Experimental

No specialist selection

Before the specialists began on Sep 30, 2026.

Research selections logged before first pitch, not betting-validated.

New York Mets at Washington Nationals

4:05 PM ET

Mets (21-28) visit the Nationals (25-25). Probable starters: D. Peterson (4.96) for Mets, C. Cavalli (3.12) for Nationals. Weather at first pitch: 72°F.

Pitchers

NYMD. Peterson (4.96)

WSHC. Cavalli (3.12)

FanDuel Lines

MLNYM — · WSH —

RL—

Total—

MLB Specialists

Experimental

No specialist selection

Before the specialists began on Sep 30, 2026.

Research selections logged before first pitch, not betting-validated.

Atlanta Braves at Miami Marlins

6:40 PM ET

Braves (34-16) visit the Marlins (22-28). Probable starters: S. Strider (4.00) for Braves, S. Alcantara (3.84) for Marlins. Dome — no weather impact.

Pitchers

ATLS. Strider (4.00)

MIAS. Alcantara (3.84)

FanDuel Lines

MLATL — · MIA —

RL—

Total—

MLB Specialists

Experimental

No specialist selection

Before the specialists began on Sep 30, 2026.

Research selections logged before first pitch, not betting-validated.

Toronto Blue Jays at New York Yankees

7:05 PM ET

Blue Jays (22-27) visit the Yankees (30-20). Probable starters: B. Fisher (3.22) for Blue Jays, C. Rodón (2.67) for Yankees. Weather at first pitch: 72°F.

Pitchers

TORB. Fisher (3.22)

NYYC. Rodón (2.67)

FanDuel Lines

MLTOR — · NYY —

RL—

Total—

MLB Specialists

Experimental

No specialist selection

Before the specialists began on Sep 30, 2026.

Research selections logged before first pitch, not betting-validated.

Athletics at Los Angeles Angels

9:38 PM ET

Athletics (25-24) visit the Angels (17-33). Probable starters: L. Severino (4.23) for Athletics, J. Soriano (3.56) for Angels. Weather at first pitch: 72°F.

Pitchers

ATHL. Severino (4.23)

LAAJ. Soriano (3.56)

FanDuel Lines

MLATH — · LAA —

RL—

Total—

MLB Specialists

Experimental

No specialist selection

Before the specialists began on Sep 30, 2026.

Research selections logged before first pitch, not betting-validated.

Colorado Rockies at Arizona Diamondbacks

9:40 PM ET

Rockies (19-31) visit the Diamondbacks (25-23). Probable starters: Z. Agnos (5.93) for Rockies, E. Rodriguez (2.89) for Diamondbacks. Weather at first pitch: 57°F, 7 MPH wind.

Pitchers

COLZ. Agnos (5.93)

AZE. Rodriguez (2.89)

FanDuel Lines

MLCOL — · AZ —

RL—

Total—

MLB Specialists

Experimental

No specialist selection

Before the specialists began on Sep 30, 2026.

Research selections logged before first pitch, not betting-validated.

How ParlayLab Covers the Slate

Every MLB game carries its research: both starting pitchers’ season and recent form, the bullpens, each lineup against the hand it faces, ballpark factors, weather (wind relative to center field, temperature, precipitation), and the FanDuel moneyline, run line and total with their movement since the open.

Game selections come from 13 experimental MLB specialists — eight on the moneyline, two on the run line and three on the under. Each is a fixed rule on season-to-date team or starting-pitcher history, decided in the hour before first pitch and logged at the FanDuel price it was recorded at. They cover regular-season games only. Their historical records are exploratory backtests, not validated profitability and not live results, and a game none of them selects reads “No specialist selection”.

Player props go through a separate Poisson projection layer per stat — hits, home runs, total bases, RBIs, runs scored, hits+runs+RBIs, and pitcher strikeouts. Each prop projection accounts for the batter-versus-pitcher history, recent rolling form, opposing pitcher ERA / WHIP / K%, ballpark-by-handedness factors, and weather. Props with strong projection-versus-line edges show up bright green; weak ones drop to orange or red.

Free users see the slate, the per-game matchup context shown above and the top props. The specialists’ tickets, every prop on the board, the prop filter builder, and the full Game Detail + Player Detail breakdowns unlock with Pro. You're charged when you subscribe — cancel anytime.