Beto made his mark in the 42nd minute at Goodison Park. He expertly controlled a through ball from Harrison Armstrong, rounded keeper Nicholas Bilokapic, and calmly slotted the ball into the empty net.
Ndiaye secured the victory for relegation-battling Everton from the penalty spot in the dying moments of the game. Jarrad Branthwaite was brought down by Jadel Katongo, leading to the crucial penalty decision.
Club captain Seamus Coleman and Under-18s coach Leighton Baines have stepped up to take on the role of interim managers at Everton.
“It was an unusual day, but a memorable one for myself, Seamus, and the entire team,” Baines told the BBC. “Winning is always a boost, and we’re thrilled to still be in the draw for a competition we’re eager to go far in.”
It was a dramatic day for Everton, made more so by the injury to forward Armando Broja, who had to be stretchered off just before the end of regular time. He received treatment, including oxygen, for what looked like a severe ankle injury.
Peterborough, despite being 47 places below their opponents in the football league, almost took an early lead. Cian Hayes chested the ball and unleashed a shot towards the bottom corner, only to be denied by Branthwaite’s last-ditch clearance.
Beto’s composed finish eased Everton’s nerves, and they should have doubled their lead early in the second half. Nathan Patterson played a neat cut-back to Idrissa Gueye, but his effort flew well over the bar.
Broja’s injury and the subsequent lengthy delay disrupted Peterborough’s momentum, hindering their chances of a late comeback. Ndiaye’s composed penalty ensured Everton’s progression to the fourth round.
“I’m proud of how the players represented themselves,” said Peterborough manager Darren Ferguson to the BBC. “We gave Everton a real game, and it took them until the final seconds to seal their victory.”
The match had the potential to be a historic first in the competition’s 154-year history, with the prospect of a father playing against his son. However, it wasn’t meant to be. Everton’s Ashley Young came on as a substitute, but his son Tyler remained an unused substitute for Peterborough.
In other results from the evening’s fixtures, Premier League Fulham defeated second-tier Watford 4-1, with goals from Rodrigo Muniz, Raul Jimenez (from the penalty spot), Joachim Andersen, and Timothy Castagne. Meanwhile, Cian Ashford’s strike secured a 1-0 win for Cardiff City over Sheffield United in a Championship clash.