Polymarket and Sportradar expand partnership to 20-plus sports leagues
Sportradar and Polymarket expanded their data partnership on August 27 to cover more than 20 global sports leagues and roughly 300,000 annual matches. The deal adds premium data, streaming, and integrity services, including Bundesliga and Grand Slam tennis coverage. Sportradar shares gained 6% following the announcement.
The deal gives Polymarket exclusive live data and streaming rights competitors cannot easily match. Sportradar's premium feeds now cover the Bundesliga and Grand Slam tennis, categories where Kalshi has no comparable content. That content gap matters because Trading Technologies just added OG.com as a second prediction-market venue, giving institutions a choice of where to route orders.
For Kalshi, the timing is tight: its weather-data partnership with The Weather Company defends its fastest-growing vertical but does nothing for sports. Traders who want live-event contracts with streaming verification will gravitate to Polymarket's Sportradar-backed markets first. The first quarterly volume split between Kalshi and Polymarket sports contracts will show how much data exclusivity drives trading flow. Sportradar deepens its role as infrastructure provider across the regulated prediction-market stack, not just one platform.