Marcos Daniel
…4–6, 4–6 Win 13–10 Oct 2007 Bogotá, Colombia Challenger Clay Santiago Giraldo 7–6(7–3), 6–4 Loss 13–11 Nov 2007 Buenos Aires, Argentina Challenger Clay Sergio Roitman 1–6, 4–6 Loss 13–12 Nov 2007 Lima, Peru Challenger Clay Pablo Cuevas 6–0, 4–6, 3–6 Win 14–12 Mar 2008 Bogotá, Colombia Challenger Clay Iván Navarro…