Question: Who did the professional tennis player currently ranked World No. 1 in men's singles defeat in the 2017 Barcelona Open Banco Sabadell - Singles?
Sentence (from "Rafael Nadal"): Rafael "Rafa" Nadal Parera (] , ] ; born 3 June 1986) is a Spanish professional tennis player, currently ranked World No. 1 in men's singles.
Relevant evidence: Yes