Table:
text: Christopher Kas
Doubles: 19 (5–14)
Doubles: 19 (5–14)
Outcome Date_ Surface Partner Opponent_in_the_final Score_in_the_final
Runner-up 6 January 2012 Hard Philipp Kohlschreiber Filip Polášek Lukáš Rosol 3–6, 4–6
Winner 4 January 2013 Hard Philipp Kohlschreiber Julian Knowle Filip Polášek 7–5, 6–4
Runner-up 14 April 2013 Clay Dustin Brown Julian Knowle Filip Polášek 3–6, 2–6
Winner 3 August 2013 Clay Martin Emmrich František Čermák Lukáš Dlouhý 6–4, 6–3

Question: Which opponent in the finals has a partner of dustin brown in Christopher Kas?