East Lansing, Mich. – The Michigan State football team closed spring practice feeling pretty good about itself following the Spring Showcase scrimmage, Saturday at Spartan Stadium. The offense played its best of the three scrimmages this spring, the first two of which were closed to the public. First-year head coach Jonathan Smith said the offensive line played its best of the spring, on Saturday. A smattering of newcomers had a big impact, on Saturday, including quarterbacks Aidan Chiles and Tommy Schuster, freshman wide receiver Nick Marsh, freshman running back Brandon Tullis and defensive …