Grigor Dimitrov in straight-sets win over Vasek Pospisil

Grigor Dimitrov is through to the third round of the Miami Masters after defeating Vasek Pospisil 6-2 6-2.

Dimitrov held his serve throughout the match, and broke in games one and five of the first set to claim the lead.

The Bulgarian converted both of his break points in set two and conceded just one point in four service games to win the match in 60 minutes.

Dimitrov will play big-serving American John Isner in the third round.