Task: Text to Code
Input (English): SQL: SELECT T1.first_name , T1.country_code FROM players AS T1 JOIN matches AS T2 ON T1.player_id = T2.loser_id GROUP BY T2.loser_id ORDER BY Count ( * ) Desc LIMIT 1
Feedback: Supplant matches with rankings in step 1 , Only find value of ranking's tours in step 2.
Output (English): SELECT T1.country_code ,  T1.first_name FROM players AS T1 JOIN rankings AS T2 ON T1.player_id  =  T2.player_id ORDER BY T2.tours DESC LIMIT 1