In March 2005, he was ranked 4th in the world in the Laser, behind Scheidt, Paul Goodison of Great Britain, and Michael Blackburn of Australia. That month, he also won the two-person racing keelboat Star class 78th Bacardi Cup on Biscayne Bay, with Mark Strube as crew. In June 2006, Mendelblatt and Strube won the 2006 Kiel Week in Germany, beating Scheidt and crewman Bruno Prada. In August 2006, he and Strube won the Star European Championship over 93 boats in Neustadt, Germany, again defeating second-place finishers Scheidt and Prada. Mendelblatt accepted a position in the fall of 2006 with Emirates Team New Zealand, and in April 2007 replaced injured veteran Adam Beashel.
