Barnes' defense a concern?

Harrison Barnes drew plenty of praise for the way he stepped up to help lead Golden State to wins over Denver in Games 2 and 3 of the Warriors' opening round playoff series, and deservedly so; Barnes shined at the biggest moments, splashed home jumpers from the perimeter with regularity and attacked the rim with one of the best dunks of the entire season.

However, defense was a big concern with Barnes entering the season, and the advanced stats show it is an area the rookie out of North Carolina still needs to improve.