. He is through to the 2nd ATP quarter-final of his career. His first came at Acapulco in 2006.
These two players had a lot of history with each other in 2006, as they battled it out in all 4 SA/Latin claycourt swing events that year. Massu inflicted 3 consecutive 1st round defeats on Daniel in the first 3 of those matches at Vina Del Mar, BA and Costa do Sauipe, with Daniel finally tasting victory at the 4th time of asking at Acapulco.
These days though, Daniel is ranked 17 places above Massu, who is really struggling right now.