10 Oldest Footballers Called Up For World Cup 2018

10. Willy Caballero (36) - Argentina

Argentina's number one at the World Cup was set to be Manchester United's reserve keeper, Sergio Romero. However, Romero has since picked up an injury and is set to be ruled out, giving 36-year-old Willy Caballero the chance of becoming the starter between the sticks for the Albiceleste.

Caballero, currently a backup keeper at Chelsea, has only played for the national side twice before and is highly unlikely to ever appear at another international tournament, but could profit from Romero's absence to demonstrate his skills on the biggest stage of all, with only Nahuel Guzmán and uncapped Franco Armani, both of whom are also in their thirties, as his current competition.

Caballero has never been regarded as a truly world class keeper, but he's still an impressive big game player, proving himself a League Cup hero for Manchester City when he saved three penalties in the final and helping Chelsea to their recent FA Cup triumph too, despite not appearing in the final. He's a really decent shot-stopper and is especially good in penalty shootouts, so could be a great option for Argentina.