BEREA, Ohio — The NFL is a young man’s game, and Todd Monken knows that all too well. He sees that half of the league’s head coaches are 45 or younger, including five who haven’t even hit 40 yet. He knows coaches almost never get their first head coaching job at 60 years old. Yet here he is, the league’s oldest rookie, getting his first and probably last shot all at once. Yes, the new head coach of the Cleveland Browns would’ve jumped at an NFL head coaching job in his 30s and 40s. He once thought he was headed in that direction. He knew back then he was ready, too. He knows now that he really...