Masters Odds & Betting

Hours of operation:

DSI Sportsbook is open 7 days a week 365 days a year. Our Wagering Center and Customer Service Offices never close

You can search your online gambling answers in our FAQ, please feel free to email our Customer Service or Contact us using our 1-888-535-2895 Toll Free Number.

Opening an Account with DSI

Opening an Account

If you have any questions about opening a new account or inquiries concerning your Diamond Sportsbook International Account please contact the sales office at Customer Service or call us at:

1-888-535-2895 (Toll Free)

FAX 1-888-280-5265

DSI Wagering Support

  • 1-888-535-2952 Toll Free (US & Canada only)
  • FAX 1-888-436-4509

DSI Casino Support

DSI Poker Support

DSI Racebook Support

If you have any questions or inquiries about opening your DSI account please contact the sales office at cos@betdsi.com or call us at 1-888-535-3024 FAX 1-888-467-2197

DSI Technical Support

For technical assistance with our website please contact cos@betdsi.com or call Toll Free 1-888-535-2895

Affiliate Program

Affiliate Program: affiliates@betdsi.com

ASIAN DEPARTMENT

Please send an email to anita@betdsi.com or call Toll Free 1-888-242-8608