Subject + 输给 + Opponent
The verb phrase 输给 (shūgěi) means 'to lose to' someone in a competition or game. It combines 输 (to lose) with 给 (to/give) to indicate the opponent who won. For example, 我们输给了对方 means 'We lost to the other team.'
我们队在决赛中输给了卫冕冠军。
Wǒmen duì zài juésài zhōng shū gěi le wèimiǎn guànjūn.
Our team lost to the defending champion in the final.
下棋的时候我总是输给爷爷。
Xià qí de shíhou wǒ zǒngshì shū gěi yéye.
When playing chess, I always lose to my grandfather.
他不甘心输给一个新手。
Tā bù gānxīn shū gěi yí gè xīnshǒu.
He was unwilling to accept losing to a novice.