Iowa tight end Addison Ostrenga will miss the rest of the season after suffering an injury to his left Achilles tendon in the first quarter Saturday at Iowa State.Ostrenga, who started the Hawkeyes’ first two games this season, needed to be helped off Saturday after landing hard on his left leg. He underwent surgery Monday to repair the tendon, coach Kirk Ferentz said.”It’s really unfortunate,” Ferentz said Tuesday. “Addison is a great young guy, and you hate to have anybody certainly lose playing time, and he’s one of our senior guys, leader, and just a tremendous young person. That’s certainly disappointing.”