It's the four best sides in the world in 2019 as the final four in the competition. At the moment it seems to be heading towards a NZ South Africa final, Wales may be the only undefeated side in the tournament but haven't put in a strong performance since the 6 Nations and England are the opposite of battle-tested, but who knows what will happen over the next 240 minutes of rugby. Reasons for optimism for Wales supporters? Absolutely.