SportzDigital allows you share your livestreamed matches to your website as special news articles.
Setting the MATCH START DATE/TIME and MATCH END DATE/TIME options will allow you to choose when the match will start, and when the "LIVE NOW" tag will be applied and removed.
If you don't want your livestream match article to be visible at all before the publish time, tick the "Unpublish when archived" box, and it will remove it from public view until it is published.