Argentine Agustin Calleri (16) earlier defeated last year's finalist and French Open champion Albert Costa 6-4 6-2.

BBC: Agassi downs Labadze

Lopez and Fernando Verdasco will face Nalbandian and Agustin Calleri in Saturday's doubles.

BBC: Lopez draws Spain level in final

Baker, whose only previous Davis Cup victory came against Argentina's Agustin Calleri in 2008 in a tie that was already lost, revealed he was nervous before the match.

BBC: Great Britain close in on Davis Cup victory

Argentina will be represented by Juan Martin del Potro, David Nalbandian, Jose Acasuso and Agustin Calleri for the best-of-five series on an indoor hard court in Mar del Plata.

BBC: Nadal will miss Davis Cup final