Air Density Report (Main) w/ @SyraCuseeee – 8.31.17


In this article I will break down the top teams and players that are affected the most by VMI and ADI today.  Many of you might ask what is VMI and ADI is so below I have written a brief description of what they mean and how they affect baseball games.

Air Density Report w/ Cuse

Visual Memory Index aka VMI in baseball is used to track how players perform under different air density’s. The easiest way to explain this is that depending on the weather temperature, humidity, or air density the batters swing will be affected.  You might ask yourself how is that possible?  Have you ever tried to swing a bat in the winter compared to a humid summer day?  It’s not the same and VMI tracks each batters muscle memory to various weather conditions.  A batter’s muscle memory takes time to adjust to certain weather conditions.  When taking VMI into effect I avoid teams or players with a number less than -5 which simply can be explained as they haven’t been hitting pitches with the type of movement that they will face on that day.  As far as what’s good for teams or players, I try and target +5 or greater because they will be used to pitches with high movement and their Visual memory will be good.

Air Density Index aka ADI is very simple to explain.  It’s a scale that goes 0-100 and is affected by three things (Elevation, temperature, and Humidity).  The Air Density is important in baseball because it will let you know how much movement the baseball will have in that ballpark on that day.  The higher the ADI the more movement on the pitch.  Typical 60 is the number people use to decide if the pitcher’s movement will be good or bad.  The lower an ADI is from 60 the less movement the pitchers ball will have and the higher it is from 60 will show the increase in the pitcher’s ball movement to the batter’s eye.


Todays Top Pitchers per VMI/ADI

Gio Gonzalez- The best play for pitching today looks amazing according to the Brewers team VMI of -5.22 which is the worst on the slate today.  The Brewers strikeout a bunch and struggle versus LHP so this is my horse for today.

Madison Bumgarner/Wacha –This game should be great for both pitchers so it’s a matter of how you want to construct your lineup tonight.  This game has a very low total and both teams have terrible team VMI’s in great conditions for pitching

Sean Newcomb – Newcomb is a great option for GPP’s tonight.  The Cubs went off yesterday and I’d expect that the public won’t want to use Newcomb because of that reason.   The Cubs have a team VMI of -2.25 which indicates they should struggle tonight but the one thing I’d look at tonight is the wind before rostering Newcomb.  If the wind isn’t a factor I’ll have some exposure to Newcomb.


Top Teams to use for hitting per ADI/VMI

  • Phils vs Marlins – I LOVE both sides of this game today. The ADI is 60.84 and both teams have the best team VMI’s on the slate tonight.  The VMI for the Phillies is +5.84 and the Marlins are +4.29 so both teams are great plays


  • Baltimore Orioles – The Orioles are red hot offensively and profile well against Estrada. The Orioles have a team VMI of +1.78 so they should do well again tonight.