Shaun Edwards accepts that Wales need to tighten up defensively as they build towards the World Cup quarter-finals.
The Six Nations champions have conceded eight tries in three Pool D games, while official statistics revealed a high missed tackle count against Fiji on Wednesday.
"I realised we missed 25 tackles, then I thought to myself, 'who did we miss those tackles on?'" Wales defence specialist Edwards said.
Wales lock Adam Beard will complete his comeback from appendix surgery a month ago when he lines up against Uruguay.
The Ospreys forward had an operation in Cardiff on Wales' departure day to Japan, and he eventually linked up with the squad 10 days later.
"The road to recovery started when I flew to Japan, and I am fighting fit and ready for Uruguay tomorrow," Beard said.
"It was obviously a massive drama, but I was lucky enough that I had good people around me who supported me a lot.
"I am buzzing to get back out there with the boys, and we want to finish this group on a high with four wins."
