A healthy offensive line would be a big plus in the Iowa football team’s effort to show improvement this season. During the last couple of years that unit has suffered from inexperience as well as injuries and junior center Bruce Nelson from Emmetsburg hopes those problems are in the past.Nelson has spent the past two seasons as a starter at guard and tackle and was moved to center during spring drills. He says a lack of injuries would allow players to stay at one position. He says they sometimes don’t have that option.Nelson says though the offensive line has taken its lumps the past two years the experience should pay off this season.Nelson says it should help the Hawkeyes establish more of a ground game.