My post from a few days ago was relatively well-received at reddit, and one of the readers there said that he’d like to see the same graph for some of the all-time great point guards.

So with a little help from Basketball-Reference.com, I compiled a list of (all?) the Hall of Fame point guards: Oscar Robertson, Lenny Wilkens, Bob Cousy, Jerry West, John Stockton, Isiah Thomas, Magic Johnson, Dennis Johnson, Tiny Archibald, Calvin Murphy, Pete Maravich and Walt Frazier. Unfortunately, the NBA didn’t start keeping track of turnovers until the 1977-78 season, so there’s no assist-to-turnover data for the first four (Robertson, Wilkens, Cousy, West) and the data for Archibald, Murphy, Maravich and Frazier is incomplete, so I could only use their post-1977 numbers.

I also compiled a list of the top non-HOF point guards who are both retired and still active: Jason Kidd, Mark Jackson, Steve Nash, Gary Payton, Rod Strickland, Maurice Cheeks, Terry Porter, Tim Hardaway, Andre Miller, Muggsy Bogues, Kevin Johnson, Derek Harper, Stephon Marbury (yes, Stephon Marbury), John Lucas, Norm Nixon, Mookie Blaylock, Sam Cassell, Avery Johnson, Baron Davis, Nick Van Exel, Allen Iverson, Chauncey Billups and Mike Bibby. All of these players have at least 5,400 career assists, which seemed to be the cutoff for players I was interested in using for this study.

Lastly, I added seven of the top current point guards who have yet to break the 5,400-assist barrier: Tony Parker, Stephen Curry, Russell Westbrook, Rajon Rondo, Derrick Rose, Deron Williams and of course, Chris Paul.

I first tackled this subject two years ago, and settled on the shot-to-assist ratio to determine whether a player is “pass-first” or “shoot-first.” The higher the number, the more of a “shoot-first” player he is. To determine whether or not a player is “turnover-prone,” I calculated each player’s assist-to-turnover ratio. The higher the number, the better the player is at taking care of the ball, relative to what he’s asked to do as a playmaker for his team. The graph takes a gentle downward slope because assists are part of both calculations. (Note: While I do like FGA/A as the criteria for shoot-first/pass-first, I am not completely sold on A/TO as the criteria for turnover-prone. Perhaps (A+FGA)/TO would show shoot-first guards in a better light? Maybe I’ll try that next year.)

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We hear it all the time. NBA analysts call one point guard “pass-first” and another “shoot-first.” Or they say one guy is “turnover-prone” while another “takes care of the ball.” But really, what makes a player a “pass-first” point guard? How carefree must he be with the ball to be considered “turnover-prone”?

I first tackled this subject two years ago, and settled on the shot-to-assist ratio to determine whether a player is “pass-first” or “shoot-first.” The higher the number, the more of a “shoot-first” player he is. To determine whether or not a player is “turnover-prone,” I calculated each player’s assist-to-turnover ratio. The higher the number, the better the player is at taking care of the ball.

I narrowed the list of players to 33, one for each team plus a few extra for teams like Cleveland, Sacramento and Denver, who have a couple of players manning the position. I also added eight prospects (indicated in green) just to see where a few of the younger guys land. Here’s the graph — it’s small, but if you click it, you’ll get to a bigger version:

So the pass-first/shoot-first aspect goes left to right, and the turnover-prone players will be towards the bottom, while the guys that take really good care of the ball will be up top. Players indicated with a blue diamond are in the Top 10 in this group in Efficiency Per Minute. I set the axis for each category at the average of the 33 players in question, so 1.97 for FGA-to-assist and 2.70 assist-to-turnover.

Two years ago when I conducted this study, seven of the top 10 EPM performers were in the top left quadrant (pass-first, takes care of the ball). This year, only five of the top 11 (I included both Rondo and Calderon, since they tied for #11) are in that quadrant. This is due to the emergence of three shoot-first, (fairly) turnover-prone guards who are emerging as stars: Derrick Rose, Russell Westbrook and Stephen Curry.

A few takeaways:

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We hear it all the time. NBA analysts call one point guard “pass-first” and another “shoot-first.” Or they say one guy is “turnover-prone” while another “takes care of the ball.” But really, what makes a player a “pass-first” point guard? How carefree must he be with the ball to be considered “turnover-prone”?

Taking an analytical approach to these questions, I decided to bust out an Excel spreadsheet and try to come up with some answers. Below you’ll see a graph that attempts to classify the top point guards in the league. But first, a little background…

I chose to categorize each player based on two stats. First, to determine if he’s “shoot-first” or “pass-first,” I calculated the shot-to-assist ratio for each player. The bigger the number, the more of a “shoot-first” mentality the player has. Second, to determine whether or not a player is “turnover-prone,” I calculated each player’s assist-to-turnover ratio. I thought about using turnovers per 48 minutes, but I like the idea of including assists so that playmakers are rewarded for the positive as well as the negative. Next, I calculated each player’s Efficiency Per Minute (EPM) to see if there is any correlation between these other statistics and the overall efficiency of the player in question.

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