To say the Ducks’ offensive line has been through a lot is an understatement. Battling numerous injuries, including those to redshirt junior Tyler Johnstone, redshirt junior Andre Yruretagoyena, senior Jake Fisher and now redshirt senior Hroniss Grasu, the Ducks’ offensive line seems to have had a target on its back from the beginning. Recently, we have seen several new faces filling in …