Database: wta_1
Question: Find the first name, country code and birth date of the winner who has the highest rank points in all matches.
SQL:
SELECT T1.first_name ,  T1.country_code ,  T1.birth_date FROM players AS T1 JOIN matches AS T2 ON T1.player_id  =  T2.winner_id ORDER BY T2.winner_rank_points DESC LIMIT 1