There is just something about Week 4 that brings the best out of Maxwell Hairston. Last year, the standout cornerback snagged a pair of interceptions and returned them both to the house in a road win at Vanderbilt — two of five picks on the season. This time around, he snatched another ball in the flat and returned it to the house 25 yards for his third career pick-six, tying a Kentucky football school record. The big moment came in the third quarter, eyeing down a screen pass from Ohio’s Nick Poulos for the easiest touchdown of the day in a 41-6 win for the Wildcats. The best part? Hairston a…