The data confirmed that air balls were better than grounders: with every 10 degree increment from minus 30 degrees to 30 degrees (where zero is a level line drive), the league-wide wOBA on contact in 2018 increased, easily surpassing the all-angles average of .315. (The average home run left the bat at a vertical angle of 28.2 degrees.) –30 to –20: .050 –20 to –10: .188 –10 to 0: .245 0 to 10: .462 10 to 20: .712 20 to 30: .731
