August Most Wins Market: Post-Trade-Deadline Update

Throughout July we had a lot of fun exploring the Most Regular Season Wins market using 2,000 Monte Carlo simulations. As that project evolved, it naturally expanded into our Monthly Division Winner simulations because those are two different questions that deserve two different simulations.

Now we arrive at the update I was most looking forward to.

Before the trade deadline, the simulations represented a complete forecast for August using the rosters available at the time.

Today, the process becomes even stronger.

The simulations no longer begin from zero.

Instead, they begin with each team's actual August record.

From there, I rebuild every club's Basewinner component ratings using the post-trade-deadline rosters and simulate the remaining August schedule 2,000 times.

Those projected wins are then combined with each team's actual month-to-date wins to produce updated probabilities for finishing with the most wins in baseball during August.

It's a bit of a double whammy.

The model isn't just working with updated rosters after the trade deadline—it's also incorporating what has already happened on the field.

As August progresses, the simulations naturally become more refined because they're combining real results with current team strength to answer today's question rather than the one we were asking on August 1.

Current Basewinner Value Board

⭐ Basewinner Star: Philadelphia Phillies

The Phillies continue to separate themselves from the field.

Even after rebuilding every team's ratings following the trade deadline and incorporating the games already played this month, Philadelphia owns a 31.15% probability of finishing August with the most wins in baseball.

That translates to Basewinner Fair Odds of +221.

DraftKings is currently offering +450.

The market has adjusted substantially since our original August preview, but Philadelphia still represents the largest gap between the model and the current price.

⭐ Basewinner Value: New York Yankees

The Yankees quietly moved onto the value board after this week's update.

The simulations give New York a 7.05% probability of finishing August with the most wins, equivalent to fair odds of +1318.

With DraftKings offering +2200, there's still enough separation between probability and price to justify a second look.

The Market Has Caught Up

One of the biggest takeaways from this week's update isn't discovering a dozen new plays.

It's seeing how much the market has already adjusted.

Before the trade deadline there were several meaningful discrepancies between the model and the sportsbook.

Today, many of those gaps have narrowed considerably.

That's exactly what we'd expect.

The sportsbooks have incorporated the roster movement, and the first several days of August have already provided valuable information.

Boston and Atlanta are good examples.

Both looked considerably more attractive on the opening board.

Today, after the market adjusted, those prices are much closer to where the simulations believe they should be.

That's an important reminder that value isn't static.

A good bet at one price isn't necessarily a good bet a week later.

Teams Worth Monitoring

The Guardians still show a modest edge relative to the market and remain an interesting longshot.

Toronto is another fascinating case.

Before the deadline, the story centered around whether the Blue Jays would buy or sell.

Now that the roster is set, most of the uncertainty—and much of the pricing advantage—has disappeared.

The simulations still grade Toronto slightly higher than the market, but it's no longer one of the standout opportunities it appeared to be before the deadline.

Why These Weekly Updates Matter

This is exactly why I wanted these simulations to become a weekly series instead of a one-time exercise.

Every update contains more information than the one before it.

• The component ratings continue to evolve.
• The month-to-date results become increasingly meaningful.
• The remaining schedule becomes smaller.
• The probabilities become sharper.

Rather than manually adjusting projections based on opinion, the process stays remarkably simple.

Rebuild the ratings.

Start with each team's actual August record.

Simulate the remaining schedule 2,000 times.

Compare the updated probabilities to the market.

Sometimes the biggest takeaway isn't identifying a brand-new longshot.

Sometimes it's recognizing that the market has already done an excellent job adjusting—and identifying the few places where meaningful value still remains.

🎤 Built Models. Real Edges.

Built models. Real edges—that's the Basewinner style.
Real wins, fresh sims—the numbers reconcile.