When it launched in March 2018, SX Bet (formerly named SportX), a peer-to-peer betting exchange, was built on Ethereum, the second-largest blockchain. With activity during the “DeFi summer” of 2020 driving up gas costs on Ethereum, SX had to pause the addition of new betting markets. It then moved to Polygon, a parallel network to Ethereum where the fees were lower. But Polygon fees started to creep up, too, so in May 2021 the SX and Polygon teams teamed up to build a blockchain just for the sports exchange, with the goal of further cutting transaction costs.
Source: https://www.coindesk.com/layer2/sportsweek/2022/07/26/is-crypto-sports-betting-ready-for-the-big-leagues/?utm_medium=referral&utm_source=rss&utm_campaign=headlines