MLB Grade the Slate — September 18, 2026
Fifteen games graded; four locked published research leans are preserved at their original prices, with 0.00u official exposure and later market updates recorded separately.
ChetBets MLB — Grade the Slate
Friday, September 18, 2026
15-game slate | Proposed positions only | Official positions: none | Official exposure: 0.00u | Model changes: none
Ledger reconciliation
The September 17 Final Positions ledger was a full pass with 0.00u official exposure. The recovered MLB ledger remains 1–2 over the last verified 30-day window, 4.25u risked, -1.0417u net and -24.51% ROI; recovered lifetime is 26–21, 67.50u risked, -0.1077u net and -0.16% ROI. The documented 1.50u Wheeler ticket remains pending and historical gaps remain unresolved. Since September 5, the verified market split is team/game markets 1–1, 3.25u risked, -0.0417u (-1.28% ROI), and player props 0–1, 1.00u risked, -1.00u (-100% ROI). Those samples are too small for a model change.
This report ranks research proposals only. Final Positions remains the canonical official card, and no proposal below has been added to AUTO_PICKS.
Ranked proposal board
| Rank | Matchup | Start PT | Exact market | Source | Proposed units | Positive Edge | Devil Risk | Net Edge | Status |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Cubs @ Reds | 3:40 p.m. PT | Cubs full-game moneyline -126 | CBS Sports consensus board | 1.00u proposed / 0.00u official | Chicago's +143 run differential versus Cincinnati's -154 differential at a moderate favorite price. | Division-road variance and unconfirmed final lineups. | +2.0 | LEAN ONLY |
| 2 | Brewers @ Orioles | 4:05 p.m. PT | Brewers full-game moneyline -138 | CBS Sports consensus board | 0.75u proposed / 0.00u official | Milwaukee's 95–58 record and +197 run differential create the slate's strongest team gap. | Milwaukee has clinched, so rest and bullpen priorities must be rechecked. | +1.4 | LEAN ONLY |
| 3 | Marlins @ Padres | 6:40 p.m. PT | Padres -1.5 full-game +112 | CBS Sports consensus board | 0.75u proposed / 0.00u official | San Diego's 9–1 run and Miami's 31–44 road record support the plus-money run line. | One-run-win and late-lineup variance remain material. | +1.1 | LEAN ONLY |
| 4 | Royals @ Pirates | 3:40 p.m. PT | Paul Skenes Over 5.5 strikeouts -130 | CBS Sports prop board | 0.75u proposed / 0.00u official | The 6.2-strikeout projection clears the verified 5.5 threshold without full-game favorite tax. | Late-season workload, contact variance and -130 juice limit the margin. | +1.0 | LEAN ONLY |
Complete current slate
Current prices are from the September 18 CBS Sports MLB odds board. Team context is checked against the official MLB standings.
| Event | Current market | Grade recommendation | Reason |
|---|---|---|---|
| Royals @ Pirates | PIT -184; KC +157 | LEAN ONLY — Skenes O5.5 Ks -130 | The prop isolates Skenes without paying full-game favorite tax. |
| Cubs @ Reds | CHC -126; total 8.5 | LEAN ONLY — Cubs ML -126 | Chicago's +143 run differential and Cincinnati's -154 differential create the best moderate-price team gap. |
| Brewers @ Orioles | MIL -138; BAL +119 | LEAN ONLY — Brewers ML -138 | Milwaukee owns the league's strongest record and a +197 run differential; clinch-related rest is the limiting risk. |
| Red Sox @ Rays | TB -125; BOS +108 | PASS | Tampa Bay's form is strong, but the price lacks enough separation from Boston. |
| Athletics @ Guardians | CLE -198; CLE -1.5 +112 | PASS | The moneyline is heavily taxed and the run line imports one-run variance. |
| Phillies @ Mets | NYM -118; PHI +102 | PASS | A near pick'em market with conflicting form and starter information does not clear the threshold. |
| Tigers @ White Sox | CWS -130; DET +110 | PASS | Division-race volatility, recent Chicago bullpen use and Colson Montgomery's wrist status keep this below the bar. |
| Blue Jays @ Rangers | TOR -136; TEX +119 | PASS | Toronto is favored, but Texas retains home-field and race motivation without enough pricing cushion. |
| Mariners @ Rockies | SEA -186; SEA -1.5 -118; total 10.5 | PASS | Coors variance and forecast thunderstorm windows make the favorite and total unattractive. |
| Braves @ Astros | ATL -116; HOU +100 | PASS | Atlanta has the stronger profile, but Houston's home power and a near-efficient price erase the required edge. |
| Nationals @ Cardinals | STL -112; WAS -104 | PASS | The market is essentially a coin flip and no verified derivative produced a material advantage. |
| Twins @ Angels | MIN -124; LAA +108 | PASS | Minnesota's price is playable in isolation, but recent Angels competitiveness prevents a clear grade. |
| Marlins @ Padres | SD -200; SD -1.5 +112 | LEAN ONLY — Padres -1.5 +112 | San Diego's 9–1 run and Miami's 31–44 road record support the plus-money run line. |
| Yankees @ Diamondbacks | NYY -125; ARI +109 | PASS | Aaron Judge's right-leg tightness must be resolved before backing New York. |
| Giants @ Dodgers | LAD -295; LAD -1.5 -132 | PASS | Los Angeles has clinched the division; rest risk and extreme favorite tax dominate the matchup edge. |
TEAM MARKETS
Rank 1 — Cubs full-game moneyline -126
Source: CBS Sports consensus board
Proposed units: 1.00u
Positive Edge: 8.7/10
Devil Risk: 6.7/10
Net Edge: +2.0
Chicago is 85–68 with a +143 run differential; Cincinnati is 71–82 with a -154 differential and has lost eight of its last 10. The -126 price asks for a much lower break-even rate than the slate's largest favorites.
Risk manager: Cap at 1.00u because this is a division road game and lineups are not Final-certified.
What changes the view: Pass beyond -145, with multiple Chicago core bats resting, or after a verified starter change. Improvement toward -115 strengthens the proposal.
Rank 2 — Brewers full-game moneyline -138
Source: CBS Sports consensus board
Proposed units: 0.75u
Positive Edge: 8.5/10
Devil Risk: 7.1/10
Net Edge: +1.4
Milwaukee is 95–58 with a +197 run differential; Baltimore is 75–78 with a -26 differential. The team-strength gap is substantial without requiring a run-line win.
Risk manager: Reduce to 0.75u because Milwaukee has clinched the division, creating rest and bullpen-priority uncertainty.
What changes the view: Pass above -150 or if Milwaukee rests multiple core hitters. A normal lineup at -135 or better preserves the proposal.
Rank 3 — Padres -1.5 full-game +112
Source: CBS Sports consensus board
Proposed units: 0.75u
Positive Edge: 8.2/10
Devil Risk: 7.1/10
Net Edge: +1.1
San Diego has won nine of 10 and is 84–69; Miami is 31–44 away. The +112 run line avoids the Padres' -200 moneyline tax.
Risk manager: Keep at 0.75u because one-run wins remain the primary failure path.
What changes the view: Pass at even money or worse, or if the Padres rest multiple high-leverage bats. +120 or better with a full lineup improves the grade.
PLAYER PROPS
Rank 4 — Paul Skenes Over 5.5 pitcher strikeouts -130
Source: CBS Sports prop board
Proposed units: 0.75u
Positive Edge: 8.6/10
Devil Risk: 7.6/10
Net Edge: +1.0
CBS's current projection is 6.2 strikeouts against the 5.5 threshold. This isolates Pittsburgh's pitching edge without laying -184 on the full-game moneyline.
Risk manager: 0.75u maximum because late-season workload, contact variance and -130 juice leave limited margin.
What changes the view: Over 6.5 is a different wager and is not proposed. Pass if 5.5 costs worse than -145, Kansas City materially reduces its projected strikeout profile, or a workload limit surfaces.
MARKET MIX
The proposed research card contains 3 team/game markets and 1 player prop: 75% team markets and 25% player props by position count. This is the nearest-practical allocation for four positions. Total proposed exposure is 3.25u; official exposure remains 0.00u. No weak fifth position was forced.
Risk-manager summary
- Proposed team exposure: 2.50u.
- Proposed prop exposure: 0.75u.
- No proposal exceeds 1.00u and there is no same-game correlation.
- Coors markets, Cleveland's heavy moneyline and Dodgers post-clinch chalk are explicit pricing traps.
- Final Positions must revalidate confirmed lineups, exact prices, Aaron Judge's availability, Milwaukee and Los Angeles rest decisions, and the Denver forecast.
Published-selection integrity notice
The four rows in the original ranked proposal board above are locked published leans. Their original markets, prices and LEAN ONLY classifications remain unchanged. The proposed-size notes are research annotations; every lean carries 0.00u official exposure and is graded separately from official positions. Later price movement or an event start changes availability only, never the historical selection.
Timestamped market and availability updates
| Time PT | Published lean | Later verified state | Availability note |
|---|---|---|---|
| 7:43 a.m. | Cubs ML -126 | Cubs -135 | Original lean locked; later price remained inside its -145 ceiling. |
| 7:43 a.m. | Brewers ML -138 | Brewers -144 | Original lean locked; later price remained inside its -150 ceiling. |
| 7:43 a.m. | Padres -1.5 +112 | Padres -1.5 +105 | Original lean locked; later price remained above the documented even-money floor. |
| 7:43 a.m. | Skenes O5.5 Ks -130 | Current prop quote unavailable | Original lean locked; no new wager or price substitution was authorized. |
| 9:39 a.m. | Cubs ML -126 | Cubs -143 | Original lean locked; later market update only. |
| 9:39 a.m. | Brewers ML -138 | Brewers -144 | Original lean locked; later market update only. |
| 9:39 a.m. | Padres -1.5 +112 | Padres -1.5 +105 | Original lean locked; later market update only. |
| 1:35 p.m. | Cubs ML -126 | Cubs -149 | Subsequent market exceeded the documented ceiling; original lean remains visible and unchanged. |
| 1:35 p.m. | Brewers ML -138 | Brewers -149; core lineup confirmed | Subsequent market update only; original lean remains visible and unchanged. |
| 5:37 p.m. | Padres -1.5 +112 | Padres -1.5 +108; both lineups confirmed | Subsequent market update only; original lean remains visible and unchanged. |
| After event start | All four MLB leans | Pregame markets closed | Historical selections — not currently bettable. Retained visibly for separate 0u settlement. |
No official wager was created from these leans, and no retroactive promotion is permitted.
Official wagers: none. Official exposure: 0.00u. AUTO_PICKS unchanged.
