Reference article
Grassland Tournament (Duck Life 4 Classic)
Win the three-race Grassland Tournament to unlock Swamp.
Invitation
Win 
Brown Tufted Duck’s Race to earn the tournament ticket. Then fill the three tournament slots and name your team.
Racing team
Choose a duck for each of the three rounds. You can use the same duck more than once.
Round 1
Average rival level: 18.
Round 2
Average rival level: 22.
Round 3
Average rival level: 26.
Winning
Accumulate the highest point total to win and unlock 
Swamp. See Tournaments for the shared entry and scoring rules.