seal the game / seal the win ：锁定胜局
seal有封口或者确认的意思.
例：Gomez scored another two goals to seal the win.
经常看体育比赛的应该知道吧
字典上查到的英文解释：(written) to make sth definite,so that it cannot be changed or argued about:to seal a contract / deal
使……明确而不可改变
字典上的例句：
◆ She sealed victory with a birdie at the final hole.
最后一洞,她用一个小鸟球锁定了胜局.（高尔夫比赛中）
win可以作为名词：胜利.
所以翻译成“锁定胜局”最为合适.
