World number 6 and Indian Wells champion Juan Martin del Potro claimed his 12th victory in a row after a 6-4 5-7 6-2 win over Robin Haase in 2 hours and 9 minutes. This was the fifth win for the Argentinian over Robin in as many matches (they have met here 12 months ago as well) and he earned it by saving three out of five break points and taking rival's serve four times from six opportunities to reach the third round.
Haase fought well and he finished the match on 39 winners and 35 unforced errors while del Potro stood on a negative 25-27 ratio. The Argentinian had the advantage in the mid-range points with five to nine strokes and saved his best tennis for the final set where he broke Haase twice to notch the triumph and stay on a course for the "Sunshine double." They both served well in the opening four games before Robin had to save a break point in game five, repelling the danger with a forehand winner to stay on the right track.
Still, he netted a forehand in game nine to lose his serve but there was a chance to got it back a few minutes later while Juan Martin served for the set. The Argentinian saved a break point with some powerful forehands and he completed the set with two service winners after 44 minutes.
The second set was even more competitive and it was Haase who drew first blood with a return winner in game eight that pushed him 5-3 in front. Del Potro was there to fight for every point and he saved four set points in the following game before he broke back thanks to a double fault from his opponent, reducing the deficit to 5-4 and moving closer to the finish line.
Nonetheless, Haase broke again in game 12 with a forehand winner to grab the set 7-5 and send the match into a decider. Del Potro quickly left the second set behind him and he lost just six points on serve in the final set to keep the pressure on Haase all the time.
He broke in game three after Robin's double fault and again in game seven after a similar outcome to take a 5-2 lead. A service winner got del Potro out of troubles in game eight and a forehand winner gave him the match point, finishing the encounter with a service winner to pass the first obstacle in Miami and remain on the winning path. Second round results: