Sal Stewart's RBI Title Odds Recover to 33% After Dip to 23%

Sal Stewart sits at 33% in the Pro Baseball RBIs Leader market on Kalshi (32% on Polymarket), holding the MLB lead with 94 RBIs as of August 19 but separated from St. Louis Cardinals outfielder Alec Burleson by exactly one RBI with roughly five weeks left. His odds fell as low as 23% earlier this week before recovering, a 10-percentage-point swing with no confirmed catalyst in either direction.

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Sal Stewart Holds the MLB RBI Lead at 94, but His 33% Market Price Tells a More Complicated Story

Stewart's 94 RBIs put him atop the leaderboard entering late August, the kind of position that in a typical season would command a much higher implied probability. Instead, the market assigns him a roughly one-in-three chance of finishing the year on top. The reason is arithmetic: Burleson sits at 93, and with approximately 30 to 35 games remaining for each team before the September 28 resolution date, one multi-RBI game by either player can flip the leaderboard entirely.

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That thin margin also explains why 33% is a recovery, not a ceiling. Just three days ago, Stewart's implied probability had fallen to 23%, its recent low. No confirmed catalyst triggered that decline. The bounce back to 33% represents a 10-percentage-point swing that looks dramatic on a chart but may simply reflect the market recalibrating around an unchanged reality: Stewart still leads.

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How Sal Stewart's Prediction Market Odds Swung From 24% Back to 33% in the RBI Title Race

The price action over the past week follows a clear dip-and-recovery pattern. Stewart entered the stretch near 35%, fell to 24% by August 25, and has since climbed back to 33%. The 12-percentage-point decline drew attention because it came without an obvious injury report, lineup change, or cold streak making headlines. The rebound has been equally quiet, with no breakout performance or confirmed news event triggering the move upward.

This pattern suggests the market is oscillating around trader uncertainty rather than responding to discrete information. When a one-RBI gap separates first and second place, even routine game-to-game variance (a 0-for-4 here, a three-RBI night there) can create outsized repricing. The spread between Kalshi at 33% and Polymarket at 32% is narrow enough to indicate agreement across platforms: Stewart is the leader, but barely.

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Alec Burleson Is One RBI Away From Taking the MLB Lead, and Traders Are Right to Stay Nervous

Burleson's 93 RBIs make him the most direct threat to Stewart's title. One sacrifice fly, one bases-loaded walk, one ground ball to the right side with a runner on third. That is the margin. In a 162-game season, RBI totals can swing by five or more in a single week depending on lineup protection, opposing pitching matchups, and sequencing luck (whether teammates are on base when a hitter comes up).

Stewart's production this season has been real. He tied his career high with six RBIs in a single game on June 20 against the Yankees and hit two three-run home runs earlier in the year against San Francisco. His early-season breakout put him in the National League Rookie of the Year conversation. But none of that insulates him from a race this tight. Burleson, playing in the Cardinals lineup, has access to his own favorable matchups and run-scoring opportunities down the stretch.

The five-week window remaining is long enough that a sustained hot streak from any contender in the top five could reshape the race entirely. Jordan Walker also appears in the upper tier of the RBI leaderboard, adding another variable to the distribution of probability across the market.

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The Strongest Case Against Sal Stewart Winning the 2026 RBI Title

The bear case does not require Stewart to collapse. It only requires someone else to run slightly hotter over a five-week stretch, which is a common outcome in baseball. RBI production is partly a function of opportunity: runners on base, plate appearances in high-leverage spots, and lineup position. If the Reds slip in the standings and Stewart sees fewer runners ahead of him, his RBI pace could cool without his underlying performance changing at all.

Consider also the history of late-season RBI races. A one-RBI lead in late August is, statistically, barely distinguishable from a tie. The probability that Stewart finishes with more RBIs than Burleson is only marginally better than a coin flip when the gap is this narrow and the sample of remaining games is this large. The market at 33% is not just pricing in Burleson. It is also pricing in the possibility that Walker or someone currently further back goes on a tear.

From a pure modeling standpoint, 33% for a leader with a one-RBI margin and five weeks remaining is defensible. It may even be slightly generous. The market is saying Stewart has the best individual chance, but the field collectively is twice as likely to produce the winner. That is a reasonable interpretation of a race this compressed.

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What Happens Next in the RBI Title Market

The next two weeks will determine whether Stewart's 33% stabilizes or becomes another waypoint in a volatile chart. Series matchups, ballpark factors (Cincinnati's Great American Ball Park is hitter-friendly), and whether either player misses time to minor injuries will all feed into the price.

For traders evaluating a position, the key question is whether Stewart's league lead deserves a premium over Burleson's price or whether the margin is so thin that both players should trade at roughly equal implied probability. The current 33% suggests the market gives Stewart a small leader's premium but nothing more.

You can track live pricing for this race on the Pro Baseball RBIs Leader odds page, which aggregates prices across Kalshi and Polymarket in real time. With the season resolving September 28, every game between now and then will move this market.