Cox will never allow its broadcasts to air on ESPN3. They are in fierce competition with LUS Cable here and will not let the competition's subscribers access to their broadcasts.
Cox has had plenty of streams air on ESPN3 over the years but for whatever reason, this one is not on there.
They would black out the local watchers, so it's not like LUS subscribers could watch it (unless you use a VPN)
When I look at the watchespn schedule it shows me that tonight's game is on ESPN+.
I see it now as well. Seems like ESPN+ will show the CST feed (they've done this for basketball road games before.) When they did it for the UL vs McNeese basketball game, it was blacked out locally for me