Crusaders lost to a Liverpool XI in Tuesday's friendly at Ravenhill.
The Anfield club fielded a young side and Suso scored with a free-kick into the top corner in the 31st minute.
Adam Morgan added the second goal with a tap-in from four yards after he met a Nathan Eccleston cross on 43 minutes.
Sosa hit the post after the break and Crusaders scored after 54 when Declan Caddell's shot took a huge deflection off Jacob Sokolik. Eccleston headed in Liverpool's third in the 79th minute.
The Crues dominated the first half hour and David Rainey went close to giving them the lead.
Suso broke the deadlock with his fine free-kick past Wayne Drummond after he had been fouled by Caddell inside the area.
Morgan's goal put the visitors in control, before Caddell's deflected effort brought the Irish Premiership side back into contention.
Gareth McKeown almost equalised when he shot over the bar, but Eccleston's goal ensured victory for the Merseysiders.
A capacity crowd of 12,000 watched the game.