未能出场 meaning in English

dn- coach's decision

The leading singer couldn ’ t appear , and her substitute clearly didn ’ t know the role very well
主要歌手未能出场，替代她的演员显然对角色不大了解。
Gennaro gattuso is suspended and simone perrotta returns from his one - match ban , which ruled him out of the 2 - 0 victory over the ukraine
加图索被停赛，佩罗塔则从停赛中复出了，在上一场2 - 0击败乌克兰的比赛中，佩罗塔就因为停赛未能出场。