2013 San Luis Open Challenger – Singles
Rubén Ramírez Hidalgo was the defending champion, but chose not to compete.
Alessio di Mauro defeated Daniel Kosakowski 4–6, 6–3, 6–2 in the final to win the title.

Seeds

Draw

Finals

Top Half
{{16TeamBracket-Compact-Tennis3-Byes
| RD1=First Round
| RD2=Second Round
| RD3=Quarterfinals
| RD4=Semifinals

| RD1-seed01=1
| RD1-team01= J Millman
| RD1-score01-1=6
| RD1-score01-2=6
| RD1-score01-3= 
| RD1-seed02=WC
| RD1-team02= M Sánchez
| RD1-score02-1=1
| RD1-score02-2=0
| RD1-score02-3= 

| RD1-seed03= 
| RD1-team03= D Kosakowski
| RD1-score03-1=6
| RD1-score03-2=4
| RD1-score03-3=7
| RD1-seed04= 
| RD1-team04= M Reid
| RD1-score04-1=3
| RD1-score04-2=6
| RD1-score04-3=5

| RD1-seed05=Q
| RD1-team05= C Díaz-Figueroa
| RD1-score05-1=6
| RD1-score05-2=6
| RD1-score05-3= 
| RD1-seed06=WC
| RD1-team06= M Gallardo Valles
| RD1-score06-1=2
| RD1-score06-2=3
| RD1-score06-3= 

| RD1-seed07= 
| RD1-team07= D Lojda
| RD1-score07-1=6
| RD1-score07-2=3
| RD1-score07-3=5
| RD1-seed08=8
| RD1-team08= A Velotti
| RD1-score08-1=2
| RD1-score08-2=6
| RD1-score08-3=7

| RD1-seed09=4
| RD1-team09= M Chiudinelli
| RD1-score09-1=4
| RD1-score09-2= 
| RD1-score09-3= 
| RD1-seed10= 
| RD1-team10= N Basilashvili
| RD1-score10-1=4r
| RD1-score10-2= 
| RD1-score10-3= 

| RD1-seed11= 
| RD1-team11= G Jones
| RD1-score11-1=6
| RD1-score11-2=6
| RD1-score11-3= 
| RD1-seed12= 
| RD1-team12= R Ghedin
| RD1-score12-1=3
| RD1-score12-2=2
| RD1-score12-3= 

| RD1-seed13=Alt
| RD1-team13=
| RD1-score13-1=78
| RD1-score13-2=5
| RD1-score13-3=6
| RD1-seed14=WC
| RD1-team14= N Massú
| RD1-score14-1=66
| RD1-score14-2=7
| RD1-score14-3=4

| RD1-seed15= 
| RD1-team15= M Demoliner
| RD1-score15-1=78
| RD1-score15-2=3
| RD1-score15-3=3
| RD1-seed16=6
| RD1-team16= P Gojowczyk
| RD1-score16-1=66
| RD1-score16-2=6
| RD1-score16-3=6

| RD2-seed01=1
| RD2-team01= J Millman
| RD2-score01-1=4
| RD2-score01-2=6
| RD2-score01-3=5
| RD2-seed02= 
| RD2-team02= D Kosakowski
| RD2-score02-1=6
| RD2-score02-2=0
| RD2-score02-3=7

| RD2-seed03=Q
| RD2-team03= C Díaz-Figueroa
| RD2-score03-1=63
| RD2-score03-2=4
| RD2-score03-3= 
| RD2-seed04=8
| RD2-team04= A Velotti
| RD2-score04-1=77
| RD2-score04-2=6
| RD2-score04-3= 

| RD2-seed05=4
| RD2-team05= M Chiudinelli
| RD2-score05-1=6
| RD2-score05-2=78
| RD2-score05-3= 
| RD2-seed06= 
| RD2-team06= G Jones
| RD2-score06-1=3
| RD2-score06-2=66
| RD2-score06-3= 

| RD2-seed07=Alt
| RD2-team07=
| RD2-score07-1=6
| RD2-score07-2=68
| RD2-score07-3=5
| RD2-seed08=6
| RD2-team08= P Gojowczyk
| RD2-score08-1=1
| RD2-score08-2=710
| RD2-score08-3=7

| RD3-seed01= 
| RD3-team01=
| RD3-score01-1=w/o
| RD3-score01-2=
| RD3-score01-3= 
| RD3-seed02=8
| RD3-team02= A Velotti
| RD3-score02-1=
| RD3-score02-2=
| RD3-score02-3= 

| RD3-seed03=4
| RD3-team03= M Chiudinelli
| RD3-score03-1=6
| RD3-score03-2=2
| RD3-score03-3=6
| RD3-seed04=6
| RD3-team04= P Gojowczyk
| RD3-score04-1=4
| RD3-score04-2=6
| RD3-score04-3=1

| RD4-seed01= 
| RD4-team01=

Bottom Half