YOU SAID:
He hit the ball with his very own base ball bat
INTO JAPANESE
彼は彼自身のベースボールバットでボールを打ちました
BACK INTO ENGLISH
He hit the ball with his own baseball bat
INTO JAPANESE
彼は自分の野球のバットでボールを打った
BACK INTO ENGLISH
He hit the ball with his baseball bat
INTO JAPANESE
彼は野球のバットでボールを打った
BACK INTO ENGLISH
He hit the ball with a baseball bat
INTO JAPANESE
彼は野球のバットでボールを打った
BACK INTO ENGLISH
He hit the ball with a baseball bat
That didn't even make that much sense in English.