Dan Evans will play Leonardo Mayer in a Davis Cup decider after Andy Murray brought Great Britain level against Argentina in the semi-final in Glasgow.
Murray beat Guido Pella 6-3 6-2 6-3 to level the tie at 2-2, after Saturday's doubles victory with brother Jamie.
Juan Martin del Potro beat Murray in Friday's opening match, but misses the reverse singles as he continues to make his way back from serious injury.
Evans steps in for Kyle Edmund to make his first appearance in the tie.
The 26-year-old from Solihull is ranked 61 places higher than Mayer at 53 in the world, but the Argentine reached a career high of 21 last year and has a 10-3 record in Davis Cup singles matches.