The match was declared off.比赛宣布取消了

declare off，意思是“正式地宣告，以宣布取消或收回承诺等”（make a formal announcement to break off; withdraw from a promise，etc．）
　　再如，
　　Unfortunately，their engagement was declared off．
　　很遗憾，他们的婚约已宣布解除。