Complex sentence: With 3 points from two games so far they knew they needed to win there next game to have any chance of qualifying because Uruguay were a shoe in to beat Tahiti which they did 8-0.
Split into simpler sentences: With 3 points from their first two games, they knew they needed to win their next game in order to have any chance of qualifying. This was because Uruguay were expected to beat Tahiti, which they did 8-0.