CREATE TABLE table_21584646_10 (quarterfinalists VARCHAR, runner_up VARCHAR)

Who were the quarterfinalists for the runner-ups of mike de palmer gary donnelly?
SELECT quarterfinalists FROM table_21584646_10 WHERE runner_up = "Mike De Palmer Gary Donnelly"
SELECT "quarterfinalists" FROM "table_21584646_10" WHERE "Mike De Palmer Gary Donnelly" = "runner_up"