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Baseball·Wed 5:00 AM ET

Hokkaido Nippon Ham Fighters vs Saitama Seibu Lions

Saitama Seibu Lions is the current favorite at $0.71 ask on Kalshi and $0.82 ask on Polymarket — an implied ≈76% chance. Prices as of 20:35 UTC on Jul 20, 2026, delayed about five minutes. Source markets: Kalshi · Polymarket. Resolution follows each venue's own market terms.

Curious how long a gap like this stays open? We measured it.

Hokkaido Nippon Ham Fighters

Wed 5:00 AM ET

Saitama Seibu Lions
50%65%70%4:30 AM7:38 AM10:45 AM1:36 PM4:33 PM55¢60¢

Moneyline

Hokkaido Nippon Ham Fighters10¢ gap
Kalshi70¢Polymarket80¢
Saitama Seibu Lions11¢ gap
Kalshi71¢Polymarket82¢

How this settles

Spread
Read each venue's rules

Kalshi

The following market refers to the Hokkaido Nippon-Ham Fighters vs Saitama Seibu Lions Japan NPB game originally scheduled for Jul 22, 2026 at 5:00 AM EDT. If this game is postponed or delayed, the market will remain open and close after the rescheduled game has finished (within two days). If the game is cancelled or rescheduled to over two days away, the market will resolve to a fair price in accordance with the rules. If the game ends in a tie the markets will resolve to 50/50. Kalshi is not affiliated, associated, authorized, endorsed by, or in any way officially connected with the Governing League. All trademarks, logos, and brand names are the property of their respective owners.

Polymarket

In the upcoming NPB game, scheduled for July 22 at 5:00AM ET: If the Saitama Seibu Lions win, the market will resolve to "Saitama Seibu Lions". If the Nippon Ham Fighters win, the market will resolve to "Nippon Ham Fighters". 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 will be official information from the NPB. A consensus of credible reporting may also be used.

Prices delayed about five minutes. Each venue's best ask per outcome; Kalshi asks are derived from its NO bids (ask = $1 minus the bid). Kalshi volume counts contracts, Polymarket volume is in dollars. Real-time prices and the full depth ladder are available via the WebSocket stream with an API key. How the market matching API works · Real-time WebSocket API docs. Feed reference DINO-XKQZ7-9182.