Question: What was the name of the championship series Robert Seguso and Vasek Pospisil  were involved with?
Sentence (from "2016 BNP Paribas Open – Men's Doubles"): Vasek Pospisil and Jack Sock were the defending champions, but lost in the final to Pierre-Hugues Herbert and Nicolas Mahut, 3–6, 6–7.
Relevant evidence: No