| 25‑Apr‑2011 | Estoril | Clay | Q2 | 597 | 159 | (4)Flavio Cipolla [ITA] d. Marrero | 6-7(4) 6-3 6-2 | | 0.83 | 3.7% | 0.9% | 72.5% | 53.2% | 36.7% | 8/16 | 2:26 |
| 25‑Apr‑2011 | Estoril | Clay | Q1 | 597 | | Marrero d. (WC)Joao Domingues [POR] | 6-0 6-2 | | 1.84 | 7.9% | 2.6% | 55.3% | 66.7% | 64.7% | 0/1 | 0:52 |
| 14‑Feb‑2011 | Buenos Aires | Clay | Q2 | 455 | 195 | (7)Ivan Navarro [ESP] d. Marrero | 6-4 5-7 7-6(5) | | 0.95 | 4.7% | 2.8% | 57.0% | 72.1% | 60.9% | 4/6 | 2:55 |
| 14‑Feb‑2011 | Buenos Aires | Clay | Q1 | 455 | 772 | Marrero d. (WC)Juan Ignacio Londero [ARG] | 6-2 6-4 | | 1.48 | 5.1% | 3.4% | 72.9% | 65.1% | 68.8% | 1/2 | 1:09 |
| 31‑Jan‑2011 | Santiago | Clay | Q1 | 389 | 316 | Caio Zampieri [BRA] d. Marrero | 6-1 6-4 | | 0.58 | 5.5% | 7.3% | 67.3% | 67.6% | 33.3% | 4/7 | 1:05 |
| 3‑Jan‑2011 | Doha | Hard | Q1 | 387 | 191 | (5)Antonio Veic [CRO] d. Marrero | 6-3 6-4 | | 0.78 | 2.9% | 1.5% | 72.1% | 51.0% | 52.6% | 3/8 | 1:17 |
