2 sentences

1. 这位年轻的投手是球队的王牌。

   zhè wèi nián​qīng de tóu​shǒu shì qiú​duì de wáng​pái.

   This young pitcher is the team's ace.

   Source: Dong Chinese Dictionary

2. 作为棒球队的王牌投手，他已经连续胜了三场比赛。

   zuò​wéi bàng​qiú​duì de wáng​pái tóu​shǒu, tā yǐ​jīng lián​xù shèng le sān chǎng bǐ​sài.

   As the baseball team's ace pitcher, he has won three consecutive games.

   Source: Dong Chinese Dictionary