We are playing against HaiYan.
play against 对阵
Which team will you play against?
We're playing against Class Three.
Your school team will play against us this afternoon.
A:Who are we going to play with today?
B:We are playing against HaiYan.
A:The basketball team from No.1 college?I know they're a tough team.
B:We are,27 to 26.
A:Really?I thought they'd been killing us by now.
B:How can it be?We are a tough team as well.