The deal, described as the largest in Watford’s history, makes the operator the first-ever crypto-currency sportsbook to appear on the shirt of a Premier League team.
The shirt sponsorship will last three years and Sportsbet.io branding will also appear at Watford’s home ground during its Premier League opener against Brighton.
Justin Le Brocque, Head of Sportsbook Marketing at Sportsbet.io, said: "The Premier League is the most-watched sports league in the world, so we are absolutely delighted to announce a major sponsorship deal with one of its most-celebrated teams."
Spencer Field, Global Strategy & Partnerships Director of Watford FC, said: "We are thrilled to have found a partner that matches our ethos by looking to disrupt the betting industry and offer their customers a fun, fast and fair experience."
Elsewhere, Aston Villa has announced BR88 will become the club’s first-ever official sleeve partner.
Aston Villa achieved promotion to the Premier League last season and recently confirmed fellow operator W88 as its principal partner.
Nicola Ibbetson, Aston Villa CCO, said: "We’re looking forward to working with BR88 to engage our global audience with a unique and exciting user experience across their platforms."
Gambling sponsorship in sport is discussed in the latest episode of the GI Huddle Podcast, which you can listen to here.
