Action will kick off on February 10 and will finish on February 16. There are some big names and home heroes involved in the ATP 250 tournament.
It takes place on clay as the attention turns towards the road to Roland Garros which takes place in May.
Dominic Thiem will be in action for the first time since losing to Novak Djokovic in the Australian Open final as top seed in Buenos Aires.
Next up is Italian ace Matteo Berrettini who is of course eighth in the World rankings and is second seed.
Diego Schwartzman and Guido Pella will get the chance to play in front of their home crowd and they are third and fourth in the seedings respectively.
The likes of Borna Coric, Dusan Lajovic and Pablo Cuevas all round out the top ten currently for the tournament which has $611,420 in prize money.
View the full entry list below:
MAIN DRAW SINGLES
1 THIEM, Dominic AUT 4
2 BERRETTINI, Matteo ITA 8
3 SCHWARTZMAN, Diego ARG 14
4 PELLA, Guido ARG 25
5 CORIC, Borna CRO 28
6 GARIN, Cristian CHI 33
7 LAJOVIC, Dusan SRB 34
8 DJERE, Laslo SRB 38
9 RAMOS-VINOLAS, Albert ESP 41
10 CUEVAS, Pablo URU 45
11 VERDASCO, Fernando ESP 49
12 LONDERO, Juan Ignacio ARG 50
13 SONEGO, Lorenzo ITA 52
14 RUUD, Casper NOR 54
15 ANDUJAR, Pablo ESP 64
16 CECCHINATO, Marco ITA 71
17 DELLIEN, Hugo BOL 75
18 DELBONIS, Federico ARG 76
19 JARRY, Nicolas CHI 77
20 [WC] MAYER, Leonardo ARG 101
21 [WC] CERUNDOLO, Francisco ARG 228
22 [WC]
23 [SE]
24 [SE]
25 [Q]
26 [Q]
27 [Q]
28 [Q]