CREATE TABLE table_21436373_12 (type_of_record VARCHAR, result_games VARCHAR)

what type of record was made where result/games is 10 games (29,606 avg.)
SELECT type_of_record FROM table_21436373_12 WHERE result_games = "10 games (29,606 avg.)"
SELECT "type_of_record" FROM "table_21436373_12" WHERE "10 games (29,606 avg.)" = "result_games"