Two of the unbeatens in Iowa Conference play meet Saturday as Buena Vista hosts Central. B-V coach Steve Osterberger says solving a Central defense that has yielded only 22-points in three games will be a key. He says they attack the ball extremely well with good athletes.Osterberger says this has all the makings of a defensive struggle, as his team also has a solid defense.Osterberg says it could be similar to last year’s matchup in which they lost 14-13 after having a field goal and extra point blocked.Central is sixth-ranked nationally in division-three.