Part of: Kansas City Royals vs. St. Louis Cardinals

Kansas City Royals vs. St. Louis Cardinals: O/U 9.5

In the upcoming MLB game between the Kansas City Royals and St. Louis Cardinals, scheduled for May 17 at 2:15 PM ET: This market will resolve to "Over" if the Kansas City Royals and St. Louis Cardinals combine to score 10 or more runs in this game. If the combined total is less than 10, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.

1 smart money signal detected, totaling $94,670.

Categories: Sports, Games, MLB, baseball

Notable Trades

Last-minute profitable sports whale

A profitable high-volume sports trader put nearly $95k on Under moments before game start, with repeated cross-market history and a major volume spike behind the move.

  • This bettor is up $249k lifetime and has traded over $12.6M across Polymarket.
  • They placed $94.7k on Under in the final minutes before first pitch.
  • The market saw a 238x–381x volume spike, suggesting heavy late conviction.

$94,670 on Under | Wallet win rate: 45%

Related Theses

Rockies Athletics stay low scoring

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Canadiens win high-scoring game

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Sparks-Tempo stays under

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Tempo-Dream stays under 178

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Marlins win low-scoring game

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Storm-Dream stays low scoring

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Knicks Cavaliers stay under

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Lynx-Storm game stays under 177.5

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Cardinals Twins low-scoring game

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Sparks-Fever stays under total

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Kansas City Royals vs. St. Louis Cardinals: O/U 9.5

Kansas City Royals vs. St. Louis Cardinals$94,670 tracked1 signalSportsGamesMLBbaseball
Over
0¢
Under
100¢

In the upcoming MLB game between the Kansas City Royals and St. Louis Cardinals, scheduled for May 17 at 2:15 PM ET: This market will resolve to "Over" if the Kansas City Royals and St. Louis Cardinals combine to score 10 or more runs in this game. If the combined total is less than 10, this market will resolve to "Under". If the game is postponed, this market will remain open until the game has been completed. If the game is canceled entirely, with no make-up game, this market will resolve 50-50. To know when a postponed game will be played, please check the home team's schedule on MLB.com for the listed team and look for the game described as a makeup game. The primary resolution source for this market is the official final statistics of the event as recognized by the governing body or event organizers. However, if the governing body or event organizers have not published final match statistics within 24 hours after the event's conclusion, a consensus of credible reporting may be used instead.

KC
2
20-27
Final
STL
0
27-19
KC +100STL -120O/U 9.5Polymarket: 0¢
Venue
Busch Stadium, St. Louis
Attendance
38,051

Notable Trades

Kansas City Royals vs. St. Louis Cardinals: O/U 9.5

2026-05-17 18:37 UTC

$94,670 on Under at 53¢

53¢→100¢↑47¢

Related Theses

Rockies Athletics stay low scoring
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Canadiens win high-scoring game
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Hurricanes vs. Canadiens: O/U …Hurricanes vs. CanadiensHurricanes vs. Canadiens: O/U …
Sparks-Tempo stays under
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Los Angeles Sparks vs. Toronto…Los Angeles Sparks vs. Toronto…Los Angeles Sparks vs. Toronto…
Tempo-Dream stays under 178
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Toronto Tempo vs. Atlanta Drea…Toronto Tempo vs. Atlanta Drea…Toronto Tempo vs. Atlanta Drea…
Marlins win low-scoring game
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Miami Marlins vs. Colorado Roc…Miami Marlins vs. Colorado Roc…Miami Marlins vs. Colorado Roc…
Storm-Dream stays low scoring
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Seattle Storm vs. Atlanta Drea…Seattle Storm vs. Atlanta Drea…Seattle Storm vs. Atlanta Drea…
Knicks Cavaliers stay under
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Lynx-Storm game stays under 177.5
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Cardinals Twins low-scoring game
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Sparks-Fever stays under total
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