Lille, France: France captain Yannick Noah on Sunday chose Lucas Pouille to face Croatia's top player Marin Cilic in the first reverse singles in the Davis Cup final.
Croatia lead 2-1 and need one point from the final two rubbers.
Noah prefered Pouille to Jeremy Chardy, who played the opening singles on Friday and lost in straight sets to Borna Coric.
The captains will have 10 minutes after the first match ends to name their players for the final singles tie.
Pouille has won the three Davis Cup singles matches he has played in what has otherwise been a grim year which has seen him drop out of the top 10 in the world rankings, falling to 32nd.
Last year he won the decisive point as France beat Belgium, 3-2, in the Davis Cup final.
Pouille and Cilic, the world No.7, have met just once, in 2016 in the Davis Cup semifinal which Croatia hosted in Zadar. Cilic won that match in four sets.
On Friday, Cilic beat Jo-Wilfried Tsonga, who is troubled by injury, in straight sets.
Nicolas Mahut and Pierre-Hugues Herbert kept France alive on Saturday when they beat Mate Pavic and Ivan Dodig in the doubles.