04/16/19: Breaking down Graham Mertz's play, the quarterback battle, candidates to start on the offensive line and more

Summary: 04/16/19: Breaking down Graham Mertz's play, the quarterback battle, candidates to start on the offensive line and more: The Zone’s Zach Heilprin joins State Journal beat writer Jason Galloway to discuss Graham Mertz’s impressive start to spring practice, how the quarterback battle could shake out this fall, what to make of the offensive line, why the Badgers’ pass rush might improve this year and more.