YankeeJim: A regular playing bud, here since 2010, says the
only way he played WGT for the first 6 months was through the link on
their site. He never knew about the main site. Now, over 2 years later
there's this announcement? What's up with that?
Probably wasn't a true partnership back then Jim. Based on what I found below, it could have been merely permission from WGT to allow The Golf Channel to run the game client in an i-frame (embedded in TGC site). The T&C specifies embedding WGT.com in another site is not allowed without permission of WGT.
I used the Internet Archives WayBack Machine site and searched for http://www.thegolfchannel.com/games/ and got this look at The Golf Channel site in December 2009. TGC had a "Games Tab" that took you to the page shown below.
Clicking on WGT Play Now brought up another TGC web page with the game client embedded.
I haven't found TWO(EA Sports) access from the current TGC website, it appears the new deal is giving WGT exclusive access from TGC and pushing EA Sports out of that picture.