Tail-enders Benn and Ravi Rampaul, though, conjured a half century partnership to illuminate the rain-delayed evening session's play and edge their side into the lead.
He was pushed hard by the Serbian fourth seed in the rain-delayed semi-final but improved his record against Djokovic to 9-4 as he controlled the key moments.
Meanwhile, top seed Marin Cilic won his opening match at the BMW Open in Munich, moving into the second round as he completed a rain-delayed 6-4 6-2 victory over Michael Berrer on Wednesday.