Karim Alayli defeated Juan Sebastian Langton 6-0 4-6 6-1 7-5 in the LIB vs POC round robin on clay. The upset overturned the form book — Juan Sebastian Langton came in leading the head-to-head 1–0. Karim Alayli claimed a first win over Juan Sebastian Langton in two meetings, levelling the head-to-head at 1–1.
Alayli K. came through in four sets.
Clay: Alayli K. leads 1–0 · Hard: Langton J. leads 1–0
Karim Alayli beat Juan Sebastian Langton 6-0 4-6 6-1 7-5. Umpiry, "Karim Alayli vs Juan Sebastian Langton — LIB vs POC Round Robin", https://umpiry.com/match/2012-04-06/alayli-vs-langton-lib-vs-poc-rr?utm_source=cite (as of 6 April 2012).