very strange how the rivals are handed out.
astral, cross chargers, EDH, and rocketscience are rivals for 2 other teams.
cassville, dong energy, fern creeks, and postal are not anyone's rival.
That does not seem very even to me.
team - rival
astral weeks - Rocket Science
Cassville Yuck - Cross Chargers
Cross Chargers - EDH Wolves
Dong Energy - Cross Chargers
EDH Wolves - Rocket Science
Fern Creek Clerics - astral weeks
Postal - astral weeks
Rocket Science - EDH Wolves