CREATE TABLE table_4925 ("Player" TEXT, "Span" TEXT, "Lost" TEXT, "Draw" TEXT, "Tries" TEXT, "Conv" TEXT, "Pens" TEXT, "Drop" TEXT)

What pens have a draw of 0 when the player is sione mafi pahulu?
SELECT "Pens" FROM table_4925 WHERE "Draw" = '0' AND "Player" = 'sione mafi pahulu'
SELECT "Pens" FROM "table_4925" WHERE "Draw" = '0' AND "Player" = 'sione mafi pahulu'