SELECT COUNT("Points defending") FROM table_28435 WHERE "Player" = 'Stanislas Wawrinka'
How many times is player Stanislas Wawrinka on the list?
CREATE TABLE table_28435 (
    "Sd" real,
    "Rk" real,
    "Player" text,
    "Points" real,
    "Points defending" real,
    "Points won" real,
    "New points" real,
    "Status" text
)