Wisconsin's 15 spring practices are in the books, and with the largest mass influx of new players we've seen yet in in the Luke Fickell era, there was no shortage of intrigue. The end of classes, a few weeks off and summer workouts are all on the horizon ahead of fall camp. Spring practice is a very exploratory phase of the offseason, especially with the myriad of new players the Badgers' coaching staff is still in the process of getting to know. Thus, while Wisconsin's 15 practices answered a handful of questions, plenty remain unsolved until fall camp. Below, we take a look at two definitive answers and two remaining uncertainties: Answer: The offensive line looks set in stone Wisconsin's offensive line in spring practice. | Christian Borman. With five additions out of the portal and a brand new position coach in Eric Mateos, it was anyone's guess as to how the Badgers' offensive line would look this spring.…