CREATE TABLE table_76628 ("Player" TEXT, "Nationality" TEXT, "Jersey Number ( s ) " TEXT, "Position" TEXT, "Years" TEXT, "From" TEXT)

Who wears the jersey number 20 and has the position of SG?
SELECT "Player" FROM table_76628 WHERE "Position" = 'sg' AND "Jersey Number(s)" = '20'
SELECT "Player" FROM "table_76628" WHERE "Jersey Number(s)" = '20' AND "Position" = 'sg'