Random Number Generator Series – Forecasting Shotblocking

A random number generator (often abbreviated as RNG) is a computational or physical device designed to generate a sequence of numbers or symbols that lack any pattern, i.e. appear random.

     This is how I end up feeling about a lot of my posts here at Hickory High. I often begin with a question and start assembling data that I think may help me find an answer. With my underdeveloped math and logical reasoning skills, this often leads me to assembling several tables or charts with no actual connection to the answer I was seeking. Usually these failed inquiries end up in the trash, but this one took a lot of work. Maybe someone can take what I have started and finish it up for me.

    This will be the first of my Random Number Generator Series; a, hopefully, sporadic series of posts where I pose a question and then assemble a bunch of numbers which don’t really answer said query.

    Today’s question: How do you forecast shotblocking? My favorite team, the Pacers, is in search of shot-blocking in the NBA Draft this year. There are several players with gaudy block numbers available in the draft this year. How can you predict who will be able to translate this skill to the NBA?

     Since the 2001/2002 season, there have been 409 individual player seasons in which a player averaged 3.0 or more blocks per 40 minutes in Division I college basketball. If we subtract duplicate seasons by the same player, and players who are either still in college or entered in the draft this year we are left with 209 players. Of those 209, only 43 played even 1 minute of NBA action, and only 11 (Hasheem Thabeet, Sean Williams, Emeka Okafor, Javale McGee, Joakim Noah, Danny Granger, Joel Anthony, Roy Hibbert, Chris Kaman, Jason Maxiell, and Taj Gibson) have ever totaled 82 blocks in a single season. That would be an average of one block per game across an entire season. Robin Lopez and Greg Oden probably would have made it this season if not for injuries. Channing Frye and Jason Thompson have each had seasons in the 70s. Even with those players included that’s only 15 of the 209 best college shot-blockers over the past nine years, or 7.1%, who have become a shot blocking presence in the NBA. Obviously, this number could go up somewhat when this year’s draft class is included.

      The statistic of blocked shots in college doesn’t seem to be an adequate stand alone indicator of who will be a productive shot blocker in the NBA. Injuries are a huge variable to this equation, one that is largely out of the hands of the individual players. As strange as it sounds, scoring and rebounding turn out to be variables as well. If you can only block shots, and can’t help out in other areas of the game then you’re a long shot to get drafted, let alone see any playing time. All 11 of the players I mentioned above averaged at least 8.5 points and rebounds per 40 minutes in the season they totaled 82 blocks. Size of the player and size of the college would also be factors. Players at smaller schools, playing against less talented competition can rack up blocks even if their own physical and athletic shortcomings would prevent them from doing the same things in the NBA.

     35 players in the NBA blocked at least 82 shots this season. Of those 35, 12 either came from Europe or directly from high school and never played college basketball. I couldn’t find college statistics for Chris Andersen or Ben Wallace, but I am going to assume their numbers were astronomical considering the competition level they were playing against. Below is a table showing the 23 players with at least one season of college experience, who also blocked at least 82 shots this season. Included is their Blk/40 from their last year in college, and their Blk/40 from this season.

Name Total Blocks ’09-‘10 Blk/40 ’09-‘10 Blk/40 College
Andrew Bogut 175 3.1 2.1
Brendan Haywood 158 2.7 5.3
Samuel Dalembert 151 2.8 6.7
Marcus Camby 146 2.5 5.1
Chris Andersen 143 3.3  –
Brook Lopez 139 1.8 2.7
Roy Hibbert 131 2.6 3.4
Emeka Okafor 127 2.1 5.0
Tim Duncan 117 1.9 3.6
Joel Anthony 109 3.3 6.5
Taj Gibson 104 1.9 3.4
Javale McGee 101 4.2 4.1
Joakim Noah 100 2.1 2.8
Paul Millsap 99 1.7 2.7
Chris Kaman 94 1.4 3.7
Al Horford 91 1.3 2.6
Hasheem Thabeet 89 4.0 6.2
Tyrus Thomas 85 2.8 4.8
Kevin Durant 84 1.0 2.1
Ben Wallace 84 1.7  –
Spencer Hawes 83 1.7 2.4
Gerald Wallace 83 1.0 1.8
Dwayne Wade 82 1.2 2.0


     So except for Andrew Bogut, the outlier, no one seems to block more shots in the NBA; not a gigantic surprise given the increased talent level. But when looking at players like Hassan Whiteside, Ekpe Udoh, Ed Davis and Jarvis Varnado who are available in this year’s draft, how do we project if they will end up on this list? Is this just a question of being talented enough in other areas to make a roster and earn minutes? Is there anything besides traditional scouting to aid in this evaluation? Are there any statistics which can be used to project their ability to bring this skill set to the NBA? I don’t know, I’m just a Random Number Generator for today. Anyone else have any ideas?

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Filed under College Basketball, NBA, Random, Statistical Analysis

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