YOU SAID:

I have tennis practice tonight but i am very tired

INTO JAPANESE

今夜はテニスの練習をしていますが、とても疲れています

BACK INTO ENGLISH

I'm practicing tennis tonight and I'm very tired

INTO JAPANESE

今夜はテニスの練習をしていてとても疲れています

BACK INTO ENGLISH

I'm very tired from practicing tennis tonight

INTO JAPANESE

今夜はテニスの練習にとても疲れています

BACK INTO ENGLISH

I'm very tired of practicing tennis tonight

INTO JAPANESE

今夜はテニスの練習にとてもうんざりしています

BACK INTO ENGLISH

I'm very tired of practicing tennis tonight