Jason Pine: Who wins the trophy?

Serbia players look on during the penalty shoot-out against the USA in the quarter-final of the U-20 World Cup played at North Harbour Stadium. Photo / Dean Purcell.

World Cup Final day. So who wins the trophy?

World Cup finals are rarely goal-fests and this one is unlikely to buck that trend.

These are undoubtedly the two best defensive teams in the tournament. Brazil have kept four consecutive clean sheets and haven't conceded a goal in over 500 minutes of football. Serbia - with the outstanding Predrag Rajkovic between the sticks - have let just three goals in, in six matches.

So how are those defences to be unlocked?

In Marcos Guilherme, Brazil will hope they have the answer. The creative front-man found some goalscoring mojo with a brace in the semi-final thrashing of Senegal and presents the most obvious threat to Serbia's rearguard. Sao Paulo midfielder Boschilia also scored in the semi-final rout and will hope to recapture his form of two years ago when he scored six goals in Brazil's 2013 campaign.

For Serbia, Andrija Zivkovic scored the crucial opener against Mali in the semi-final and also found the net against Mexico in pool play, while Ivan Saponjic scored his side's most crucial goal of the tournament, heading home the extra-time semi-final winner to send Serbia through to the final.

There's no doubt Brazil have the greater pedigree at this level, reaching their ninth final, having won five of their previous eight. They've also set a new record in this tournament, now going twenty straight matches at the under-20 World Cup without losing in regulation or extra-time. By contrast, Serbia are in the final for the first time since 1987 when - as Yugoslavia - they beat Germany to lift the trophy.

Seven previous under-20 World Cup finals have gone beyond the ninety minutes, and of those, five have needed penalty shootouts to find the eventual winners. Both of these sides will be well used to these scenarios with Serbia going to extra-time in all three of their knockout matches, while Brazil needed penalties to eventually succumb both Uruguay and Portugal.

Key man: Predrag Rajkovic (Serbia): The Serbian skipper has been the outstanding goalkeeper at this tournament, saving his side time and again in regulation and extra-time and penalty shoot-outs. If the game should go beyond 120 minutes, he may well prove even more crucial.

Tip: Brazil 1-0