Messi on mission in Copa America final

But that hasn't stopped him from being the tournament's most influential player with five goals and four assists.

Among the highlights has been a fizzing 25-yard goal from a free-kick against the United States in the semifinals that saw him overtake Gabriel Batistuta's Argentina scoring record.

While the focus of the final will inevitably be on Messi, it is unfair to say he is the be-all and end-all of this Argentina side.

The Albiceleste also boast Gonzalo Higuain, the top scorer in Italy's Serie A last season, prolific Manchester City striker Sergio Aguero and winger Angel Di Maria.

The latter is in doubt for Sunday's duel at MetLife stadium with a muscle injury, as is midfielder Augusto Fernandez.

Meanwhile Hebei China Fortune forward Ezequiel Lavezzi has been ruled out of the final after fracturing his elbow against the USA.

After a slow start to the tournament, Chile have found their stride.

Many doubted how they would fare here under the management of Argentine Juan Antonio Pizzi, who took over from his compatriot Jorge Sampaoli in January.

Fitful displays in his first matches in charge did little to raise the hopes of Chile fans pining for two Copa America triumphs in as many years.

But the Roja have looked a different side since their their opening loss to Argentina.

They proved their title credentials by trouncing Mexico 7-0 in their quarterfinal and then outclassing Colombia 2-0 to earn a berth in the final.

Pizzi's team will be bolstered by the return of Bayern Munich playmaker Arturo Vidal, who missed the semifinal due to suspension.

But midfielders Pablo Hernandez and Marcelo Diaz are doubtful with knee and upper leg injuries respectively.