Table:
text: Eduardo Schwank
Singles Titles
Singles Titles
Date_ Tournament Surface Opponent Score
April 21, 2008 Cremona Hard Björn Phau 6–3, 6–4
April 28, 2008 Rome Clay Éric Prodon 6–3, 6–7, 7–6
May 12, 2008 Bordeaux Clay Igor Kunitsyn 6–2, 6–2
October 25, 2009 Santiago Clay Nicolás Massú 6–2, 6–2
November 22, 2009 Lima Clay Jorge Aguilar 7–5, 6–4
January 31, 2010 Bucaramanga Clay Juan Pablo Brzezicki 6–4, 6–2

Question: Who was Eduardo Schwank's opponent on April 21, 2008?