Juan Carlos will play Slovak qualifier Martin Klizan in R1.
The guy is 21 and is ranked #289, but was ranked inside top 200 before, and he seems to be playing well as he beat all the opponents in the qualifying in straight sets.
And the bottom half plays first this year, so JC may be playing tomorrow. (Schedule available only for top three show courts now.) If not tomorrow, he will play on Tuesday.
Good luck, Juanqui!