That is a Premier League record for Palace, earned by beating Watford 1-0 at Selhurst Park on Saturday afternoon.
Vieira said in his post-match press conference that his side have consciously worked across the team to finetune their defending, saying: “I think from the start of the season we knew we needed to improve our defensive game and we’ve been working on that. The players have been working well, working hard and that allowed us to be more solid.