The most important game of the series is here.
If the Spurs win, they will take a commanding 3-2 series lead, putting immense pressure on the Memphis Grizzlies to win at home in game six. If the Spurs lose at home, they will have to win two straight games, including game six on the road, to come out of this series victorious.
While the statistic is always changing, the winner of a game five in a tied series usually goes on to win the series, so saying this is an important game would be a massive understatement.