Find the full name and id of the college that has the most baseball players.
SELECT T1.name_full ,  T1.college_id FROM college AS T1 JOIN player_college AS T2 ON T1.college_id  =  T2.college_id GROUP BY T1.college_id ORDER BY count(*) DESC LIMIT 1;
college that has the most baseball players refers to MAX(COUNT(player_id)); full name refers to name_full; id refers to college_id;