HOUSTON — How appropriate that, at the place “the road ends,” the Kentucky men’s basketball team must try to solve the question that nobody has figured out on the Road to the Final Four. How do you stop Kemba Walker? How do you limit one of the nation’s best scorers and arguably its best playmaker from taking over the game?Even Walker isn’t sure.”How would I stop myself?” Walker said. “I wouldn’t be able to.”Best of luck, DeAndre Liggins.For all the misguided comparisons of the Kemba Walker-Brandon Knight matchup at Final Four media availability Thursday, the difference for UK between advancing to the school’s first national championship since 1998 and becoming another victim of Walker’s sensational run could be the Walker-Liggins matchup.In the first meeting, an 84-67 shellacking by Connecticut in the EA Sports Maui Invitational, Walker abused Liggins and the Wildcats, one of the few players over the last two seasons to get the best of one of the nation’s top defenders.In Walker’s coming-out party, so to speak, the UConn junior hit 10-of-17 shots from the field en route to a 29-night point outing.”He killed us,” Liggins said. “The first time we played, it was three games in three days and I was kind of worn out a bit. That’s still no excuse, but I had no legs. I was tired.”Ever since then, Liggins has wanted another shot at the UConn point guard, even mentioning Walker’s name before the Southeastern Conference Tournament, well before anyone could have imagined Kentucky and Connecticut would be playing in Houston at the Final Four.”If I had the chance to play (Connecticut’s) Kemba Walker and the guys that beat us (again), it would be different,” Liggins said in early March.Liggins has since backed off his words a little bit and even suggested Thursday that reporters heard him wrong back in March. Coming from a guy who plays with such ferocity on the court, Liggins has done a lot of praising this week instead of hyping of the rematch any further.”It’s not animosity,” Liggins said of his desire to guard Walker again. “Kemba Walker is a great player. He scores in bunches. I just want to do a better job on him this time. He is going to score points, but I am going to try to make him work for everything he puts up.”Walker, who didn’t blame Liggins for wanting to face him again, was reciprocal in his admiration.”He’s definitely a great on-ball defender,” Walker said. “He’s got extremely long arms and he definitely has a height advantage. I’m pretty sure he’s going to force me into some tough shots. I’m going to try my best to get the best shots possible.”And if Walker gets off 25 shots and makes them? “Oh well,” Liggins said, there’s not much you can do.”You can’t stop him,” Liggins said.Liggins may very well speak the truth. En route to 931 points this season and a 23.9 scoring average, Walker has captured the attention of the nation and is one of the favorites to win National Player of the Year honors. The 6-foot-1 guard, who Calipari admitted “missing on” years ago when he was at Memphis, has 11 games of 30 points or more this season and only once has he been held to single digits.More importantly, Walker has led what was a maligned National Invitation Tournament team from a year ago and carried it back to the Final Four.Walker’s value isn’t lost on longtime UConn coach Jim Calhoun. Having coached the likes of Ray Allen, Richard Hamilton, Caron Butler and Emeka Okafor, Calhoun feels comfortable with putting Walker in that elite company, especially when he considers his importance to the program.”When you score 900-something points in a year, when you average over six rebounds a game and you change your game … you’re pretty special,” Calhoun said. “He’s cut from the same cloth as some of the other great players we’ve had. He’s in that category of just first name needed, nothing else.”Against Ohio State and North Carolina, head coach John Calipari matched up Liggins with Aaron Craft and Kendall Marshall, the teams’ respective point guards. The line of thinking has been, cut off the head and the rest of the body falls.That would seem to be the key against a UConn team that has just one other scorer averaging double figures (Jeremy Lamb). Calhoun, however, thinks that would be a mistake for Kentucky.”If you need to load up and do it with other folks, it’s going to cause you problems,” Calhoun said. “He recognizes when you load up.”And though the ball is in Walker’s hands a lot, Calhoun is right. At the end of the Big East championship game in New York, Louisville tried doubling Walker at the top of the key. Walker made the Cardinals pay with a slick pass under the hoop. In four games in the NCAA Tournament, Walker is averaging 6.8 assists, including 12 dimes in the opening-round win over Bucknell.”He is going to score his points and do what he does,” Liggins said. “Our job is to stop the other guys.”Even so, Liggins will likely draw the assignment on Walker, if for no other reason than to harass Walker and tire him out. Liggins, at 6-6 with a 7-foot wingspan, has a significant height advantage on the 6-1 Walker, and this time around, Liggins said he’s going to try to deny Walker the ball, one thing we generally haven’t seen from his repertoire of impressive defense.Whatever Liggins decides to do, his matchup with the nation’s most electrifying scorer could very well prove to be the difference Saturday in Houston.”My job is to contain him the best way I can,” Liggins said.Very few have been able to figure out how to do that.