The most expensive player in the world has been sidelined since 25 February, when he fractured a metatarsal and sprained his ankle playing for Paris St Germain in a French league match against Olympique de Marseille.
Firmino struck in the dying seconds to cap a successful outing for Brazil, who face just one more friendly with Austria next Sunday before their World Cup opener against Switzerland on June 17.
Neymar had spoken last month of his concerns about winning that race and described his rehabilitation as the biggest challenge of his career.
The same Liverpool supporters who cheered Firmino went out of their way to jeer Coutinho, who left the Reds for Barcelona earlier this year.
Brazil's striker Roberto Firmino (R) celebrates with Brazil's striker Neymar after scoring their second goal during the worldwide friendly football match between Brazil and Croatia at Anfield in Liverpool on 3 June 2018.
Tite said there was no doubt that Neymar gives them something extra but said that needed to be kept in perspective.
However, one positive for the future for Croatia is that they do still have Mario Mandzukic to come into the team and perhaps provide the finishing they need for the World Cup. It was only through Neymar's introduction that this was addressed.
United States to Impose Steel Tariffs on EU
But Macron said those "who waged bilateral trade wars. saw an increase in prices and an increase in unemployment". In terms of the NAFTA talks, the tariffs could hinder the negotiations among the North American neighbors.
Messi announces desire to play for Newell's Old Boys
It was a convincing - if not surprising - win for a team ranked fifth in the world, 103 places above their opponents. Lionel Messi will be acutely aware that this is nearly certainly his final World Cup at his peak.
Evacuations urged in Hawaii as lava flow advances
Officials had no information on how many residents still remained in the neighborhhod or how many people might have already left. Lava flows crossed the main access road to the Puna Geothermal Venture plant and were threatening to cover several wells.
Zidane Says Not ‘Seeking Another Team’ To Coach
He gave me the opportunity to come as a player and now manager and I am eternally grateful. "And that's why I took this decision". Zidane, the former Real, Juventus and Bordeaux midfielder, is understood to be under contract in Madrid until 2020.