CREATE TABLE table_75150 ("Player" TEXT, "Position" TEXT, "Starter" TEXT, "Touchdowns" FLOAT, "Extra points" FLOAT, "Field goals" FLOAT, "Points" FLOAT)

How many extra points did right halfback Roswell Wendell have?
SELECT "Extra points" FROM table_75150 WHERE "Position" = 'right halfback' AND "Player" = 'roswell wendell'
SELECT "Extra points" FROM "table_75150" WHERE "Player" = 'roswell wendell' AND "Position" = 'right halfback'