What is the Pirates vs. Cardinals prediction market about?

This market lets traders predict the winner of the MLB game between the Pittsburgh Pirates and St. Louis Cardinals scheduled for May 21 at 1:15 PM ET.

How does the Pirates vs. Cardinals market resolve?

The market resolves to “Pittsburgh Pirates” if the Pirates win and to “St. Louis Cardinals” if the Cardinals win. If the game is canceled with no makeup or ends in a tie, it resolves 50-50.

What smart money is being tracked on this MLB market?

PolySpotter is tracking $1,000 in smart money across 1 signal for this market, including alerts tied to profitable wallets, sharp sports bettors, and Cardinals buying activity.

What happens if the Pirates vs. Cardinals game is postponed?

If the game is postponed, the market remains open until the game is completed, rather than resolving on the originally scheduled date.

Where can I find Pirates vs. Cardinals Polymarket odds?

You can follow the live Pirates vs. Cardinals prediction market odds on PolySpotter, along with smart money alerts and wallet activity from sharp MLB traders.

Part of: Pittsburgh Pirates vs. St. Louis Cardinals

Pittsburgh Pirates vs. St. Louis Cardinals

This prediction market covers the May 21 MLB game between the Pittsburgh Pirates and St. Louis Cardinals, resolving to the team that wins the game. PolySpotter is tracking $1,000 in smart money and 1 signal, with recent alerts noting sharp MLB interest and buying activity on the Cardinals side. If the game is postponed, the market stays open until completion; if canceled with no makeup or tied, it resolves 50-50.

In the upcoming MLB game between the Pittsburgh Pirates and St. Louis Cardinals, scheduled for May 21 at 1:15PM ET: This market will resolve to "Pittsburgh Pirates" if the Pittsburgh Pirates win the game. This market will resolve to "St. Louis Cardinals" if the St. Louis Cardinals win the game. 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, or ends in a tie, this market will resolve 50-50. 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.

16 smart money signals detected, totaling $128,069.

Categories: Sports, Games, MLB, baseball

Notable Trades

Profitable serial sports bettor

Profitable serial cross-market trader with a strong long-term record bought the Cardinals underdog during a major pre-game volume spike, though the price has since moved against them.

This bettor has won 67% of 233 resolved bets and is up $387,622 lifetime.
They are a serial cross-market trader across 216 events, with nearly $922,000 tracked in similar activity.
Bought the Cardinals at 24¢ during a 22x volume spike, though the market has since fallen to 12¢.

$1,000 on St. Louis Cardinals | Wallet win rate: 67%

Profitable serial sports sharp

A highly profitable serial sports trader bought $8.6k of Pirates at 68¢ amid one-sided flow, a 21x volume spike, and a sharp 1-day price move.

This bettor wins 72% of resolved trades and is up $11.3M lifetime.
They bought $8.6k of Pittsburgh at 68¢ after closing the opposite Cardinals position.
Three wallets are buying the same side, with $15.7k on Pittsburgh as volume spiked 21x.

$8,629 on Pittsburgh Pirates | Wallet win rate: 72%

Profitable wallets buying dip

Surfaced because three wallets put $44.8k on the Cardinals during a major pre-game/in-game volume surge, including two wallets with strong lifetime profitability despite the price moving sharply against them.

Three wallets put $44.8k on the Cardinals, a large coordinated bet relative to $39k market liquidity.
Two participating wallets are up big lifetime, with about $1.25M combined profit across millions traded.
The Cardinals price has fallen hard to 32¢, but recent buys at 32–33¢ suggest at least one bettor is adding into the drop.

$44,835 on St. Louis Cardinals

Profitable serial bettor cluster

Highly profitable serial sports bettor bought Pirates alongside one-sided cluster flow and a 25x pre-event volume spike.

This bettor has won 69% of 6,246 resolved bets and is up about $3.0M lifetime.
Five wallets bought the Pirates in the same window, totaling $9,241 on one side.
Market volume spiked 25x and the Pirates moved from this 59¢ entry to 64¢.

$1,480 on Pittsburgh Pirates | Wallet win rate: 69%

Sharp bettor joins Pirates flow

Sharp profitable MLB bettor bought Pittsburgh alongside one-sided group flow and a major pre-game volume spike.

This bettor wins 83% of resolved trades and is up $6,881 lifetime.
Five wallets are all buying Pittsburgh, totaling $9,241 in the same direction.
They entered at 59¢ and the market has already moved to 64¢, with volume spiking 25x.

$1,192 on Pittsburgh Pirates | Wallet win rate: 83%

Sharp MLB bettor buying Cardinals

Sharp sports bettor with an 89% record and strong lifetime profit bought St. Louis at 49¢ amid a major pre-game volume spike.

This bettor wins 89% of resolved trades and is up $75,972 lifetime.
They are a serial cross-market sports trader across 33 events with the same 89% hit rate.
A 107x pre-game volume spike adds momentum behind the Cardinals entry at 49¢.

$2,402 on St. Louis Cardinals | Wallet win rate: 89%

Sharp bettor joins Pirates cluster

Surface: a highly profitable 93% win-rate bettor joined a $24.8k four-wallet one-sided move on the Pirates amid a 53x pre-game volume spike.

One bettor in this cluster wins 93% of resolved trades and is up $217k lifetime.
Four wallets put $24.8k on the Pirates in the same window, all at 52¢ equivalent entry.
Pre-game volume is running 53x above normal, suggesting concentrated momentum before the matchup.

$24,829 on Pittsburgh Pirates

27-0 sharp sports bettor

Surface despite the modest volume-spike score because the buyer is a proven sharp wallet with a 27-0 resolved record and +$228k profit buying Pirates at 52¢.

This bettor has won 27 of 27 resolved bets and is up $228k lifetime.
They are buying at 52¢ in a liquid MLB market, suggesting they see the Pirates as underpriced.
The market also saw a 156x pre-event volume spike, adding momentum behind the move.

$2,500 on Pittsburgh Pirates | Wallet win rate: 100%

Perfect-record sports sharp

Sharp sports bettor with a perfect 27-0 resolved record and strong profits bought $5,000 of Pirates at 52¢ despite this being a liquid market.

This bettor is 27-for-27 on resolved trades and is up $228k lifetime.
They have traded across 30 events with a perfect recorded win rate, suggesting a repeatable sports edge.
Entry at 52¢ implies they see value on the Pirates in a market priced near a coin flip.

$5,000 on Pittsburgh Pirates | Wallet win rate: 100%

99% win-rate sports sharp

Elite proven wallet with a 99% historical win rate and strong cross-market record bought St. Louis at 49¢.

This bettor has won 197 of 199 resolved bets and is up $473K lifetime.
They are a serial cross-market trader across 161 events with a 99% hit rate.
Entry at 49¢ suggests they see St. Louis as underpriced despite the market being near even.

$1,225 on St. Louis Cardinals | Wallet win rate: 99%