If Royal and Sealy win, the three way tie is between Sealy, WC, and Sweeny. Each team has beat each other so it goes to points.
WC beat Sealy by 9, lost to Sweeny by 17+ (17 points is the max) so they are -8.
Sealy lost to WC by 9, and beat Sweeny by 2 so they are -7
Sweeny beat WC by 17+, but lost to Sealy by 2 making them +15
So if Royal and Sealy win with a Sweeny loss, that would put Royal in 2nd, Sweeny in 3rd, and Sealy in 4th with WC out.
If WC wins, now the they are 2nd (4-2), with the three way tie falling to Royal, Sealy and Sweeny. With Royal beating both those teams, they go 3rd and Sealy has the head to head against Sweeny for 4th.
In the event that Sweeny somehow figures out a way to beat the Brahmas, or if Sealy loses, then Sealy is out.