CREATE TABLE table_53950 ("Nation" TEXT, "Skip" TEXT, "Third" TEXT, "Second" TEXT, "Lead" TEXT, "Alternate" TEXT)

Which Skip will play Joan Mccusker?
SELECT "Skip" FROM table_53950 WHERE "Second" = 'joan mccusker'
SELECT "Skip" FROM "table_53950" WHERE "Second" = 'joan mccusker'