Ozzie Albies looks to be wearing the Nike Diamond Batter Leg Guard, but a fully customized version. The Diamond leg guard has an extended curved top, whereas the Nike BPG 40 2.0 guard goes straight across the shin. These are pretty hard to find, especially if you are a lefty hitter.
You can find the guard in black for the left leg, worn by right-handed hitters, at baseballsavings.com for around $25.
