The Bitcoin sports betting industry is becoming extremely competitive with hundreds of sites to choose from in 2021. 

In response to the increase in competition, online bitcoin sports gambling sites are now offering more crypto bonuses and benefits to attract more users and high rollers. 

Bitcoin betting and crypto sportsbooks have become more attractive due to fast deposits and withdrawals, low fees, and a larger selection of games that can be played using Bitcoin and altcoins.
For more details 
https://cryptomaniaks.com/latest-cryptocurrency-news/best-crypto-sports-betting-sites