[2] In 2009 he won two Challenger level ATP doubles titles with partner Marcelo Demoliner.

[2] Guidolin’s career win–loss record at the ATP/WTA Tour and ITF Pro Circuit main draw is 166 wins and 132 losses.

His doubles record at the ATP/WTA Tour and ITF Pro Circuit main draw is 187 wins and 105 losses.

In the ITF Pro Circuit main draw Guidolin’s career singles record is 160 wins versus 121 losses.

Career doubles in the ITF Pro Circuit main draw was 159 wins to 82 losses.