CREATE TABLE table_name_18 (team VARCHAR, result VARCHAR, interim_head_coach VARCHAR)

Which team lost under interim head coach, Dewayne Walker?
SELECT team FROM table_name_18 WHERE result = "lost" AND interim_head_coach = "dewayne walker"
SELECT "team" FROM "table_name_18" WHERE "dewayne walker" = "interim_head_coach" AND "lost" = "result"