This is possible, however you may not need to use the SignStix device. 

1. If you have a laptop showing the content then you can connect this straight to the screen using HDMI input.

2. Alternatively, create a sign in Creator containing a full screen webpage. In the URL settings, add the webpage you are interested in (you may want to make this interactive).

Deploy this sign to the device and this should play your webpage with sporting content.