It's kinda non-complicated simple about the way Hunter Dietz goes about his business on Thursday nights. He takes the ball. Then he throws strikes. More often than not, he's still standing on the mound deep into a game while the Razorbacks are sitting on a lead. That's exactly what No. 12 Arkansas needs as it opens its final regular-season series Thursday at Kentucky Proud Park in Lexington. First pitch is set for 5:30 p.m. and the Hogs are sending their most trusted arm to get things started. Dietz carries a 7-2 record and a 3.22 ERA into the matchup against Kentucky right-hander Nate Harris, who comes in at 4-2 with a 5.72 ERA. The numbers tell you something right away. Arkansas has a clear advantage in the pitching matchup for Game 1 and the left-hander's ability to chew through lineups and stay in games long into the night is something that has become routine the last few weeks. That kind of reliability matters in late May, when every start has postseason implications layered on top of it.…