A second challenger title followed in Calabasas when he beat Ryan Sweeting .
Matosevic won his first challenger tournament at the 2010 Comerica Bank Challenger beating the Donald Young in the final .
A second challenger title followed in Calabasas when Matosevic beat Ryan Sweeting .
Matosevic won his first challenger tournament at the 2010 Comerica Bank Challenger beating the Donald Young in the final .