Marcos was ousted by World No. 47 Simone Bolelli 6-2, 6-2 in one hour and four minutes in the first round of the Miami Open presented by Itau.
Making his eighth trip to the ATP World Tour Masters 1000 event, he fired four aces, but was unable to overcome 24 winners and 93 per cent first serve points won by Bolelli. The Italian improved to 2-0 against Marcos, having previously met at Roland Garros in 2008.
Marcos will make his next appearance at the Open Guadeloupe in Le Gosier, a $100,000 event on the ATP Challenger Tour.
