The 2017 Copa Sudamericana first stage was played from 28 February to 1 June 2017. A total of 44 teams competed in the first stage to decide the 22 of the 32 places in the second stage of the 2017 Copa Sudamericana.
<section begin=Draw /> The draw for the first stage was held on 31 January 2017, 21:00 PYST (), at the CONMEBOL Convention Centre in Luque, Paraguay. For the first stage, the teams were divided into two pots according to their geographical zones:
The 44 teams were drawn into 22 ties (G1âÂÂG22) between a team from Pot A and a team from Pot B, with the teams from Pot B hosting the second leg in odd-numbered ties, and the teams from Pot A hosting the second leg in even-numbered ties. This distribution ensured that teams from the same association could not be drawn into the same tie.<section end=Draw />
<section begin=Format /> In the first stage, each tie was played on a home-and-away two-legged basis. If tied on aggregate, the away goals rule would be used. If still tied, extra time would not be played, and the penalty shoot-out would be used to determine the winner (Regulations Article 6.1).
The 22 winners of the first stage advanced to the second stage to join the 10 teams transferred from the Copa Libertadores (two best teams eliminated in the third stage of qualifying and eight third-placed teams in the group stage).<section end=Format />
The first legs were played on 28 February, 1âÂÂ2 March, and 4âÂÂ6 April, and the second legs were played on 9âÂÂ11 May, 30âÂÂ31 May and 1 June 2017. <section begin=First stage />
<section end=First stage />
Nacional Potosàwon 4âÂÂ3 on aggregate and advanced to the second stage.
Tied 2âÂÂ2 on aggregate, Deportivo Cali won on away goals and advanced to the second stage.
Universidad Católica won 6âÂÂ1 on aggregate and advanced to the second stage.
LDU Quito won 4âÂÂ3 on aggregate and advanced to the second stage.
Tied 1âÂÂ1 on aggregate, Patriotas won on penalties and advanced to the second stage.
Sol de América won 10âÂÂ3 on aggregate and advanced to the second stage.
Cerro Porteño won 3âÂÂ2 on aggregate and advanced to the second stage.
Huracán won 4âÂÂ3 on aggregate and advanced to the second stage.
Tied 2âÂÂ2 on aggregate, Oriente Petrolero won on penalties and advanced to the second stage.
Corinthians won 4âÂÂ1 on aggregate and advanced to the second stage.
Independiente won 1âÂÂ0 on aggregate and advanced to the second stage.
Tied 1âÂÂ1 on aggregate, Ponte Preta won on away goals and advanced to the second stage.
Boston River won 4âÂÂ2 on aggregate and advanced to the second stage.
Arsenal won 8âÂÂ1 on aggregate and advanced to the second stage.
Fuerza Amarilla won 2âÂÂ1 on aggregate and advanced to the second stage.
Tied 2âÂÂ2 on aggregate, BolÃÂvar won on away goals and advanced to the second stage.
Tied 1âÂÂ1 on aggregate, Palestino won on penalties and advanced to the second stage.
Tied 3âÂÂ3 on aggregate, Sport Recife won on penalties and advanced to the second stage.
Racing won 2âÂÂ1 on aggregate and advanced to the second stage.
Tied 3âÂÂ3 on aggregate, Nacional won on penalties and advanced to the second stage.
Tied 1âÂÂ1 on aggregate, Defensa y Justicia won on away goals and advanced to the second stage.
Fluminense won 2âÂÂ1 on aggregate and advanced to the second stage.