The coaching staff wants Ryan Harrow to understand how tough life is going to be as the starting point guard for the defending national champions. As a 170-pound guard, they want him to realize that teams are going to try to push him around, get physical and frustrate him with their on-the-ball defense. In years past, John Calipari had a DeAndre Liggins, a Michael Kidd-Gilchrist or even a Marquis Teague at his disposal to illustrate his point. Want to know what life is like as Kentucky’s point guard? Try to get past one of those three in practice and you had a pretty good idea. Maybe Twany Beckham’s credentials don’t pop off his bio sheet quite like his predecessors, but Beckham could be the next in a recent line of stingy stoppers. At nearly 6-foot-5, 202 pounds, Beckham has the physical attributes to be an on-the-ball pest at the guard position.