@JayHawkFanToo Chalmers played the 1, but it worked better with RussRob leading the way. So he was used mainly as a combo 2. Similar to how many would like to see Graham take over the ball handling to allow Mason more freedom to score.
Since the question is best guards (1-3) at KU I'd rate the ones I watched since '89 as follows:
Best pure point: Jacque Vaughn
Most active guard: Jerrod Haase
Best pure scorer: Paul Pierce
Most athletic wing/guard: Andrew Wiggins
Highest flying guard: Kenny Gregory
Best stealing tandem: Mario Chalmers and Russel Robinson
Best at making layups: Travis Releford
Best all around point guard: Tyshawn Taylor
Easiest to forget drafted point guard: Ryan Robertson
Most prolific scoring point guard: Frank Mason
Mr. Clutch: Sherron Collins
Best wing defender: Brandon Rush
Best clown killer: Ellijah Johnson
Highest flying with a pretty stroke: Ben McLemore
Best glue player ever: Josh Jackson (I'm not even sorry Morningstar)
Scrappiest guard: Rex Walters
Most hard nosed guard: Adonis Jordan
Best slasher: Keith Landford
Best mustache: TJ Whatley
Best facilitator Aaron Miles
Best Free throw stroke: Brannen Greene
Longest shorts relative to legs: Calvin Rayford
++edited for exclusions++
So many good guards all great at something different. No two alike.