Jacques Nienaber is a self-identifying ‘numbers guy’. He sees the game of rugby as if he’s plugged into the Matrix. That isn’t a hulking loose forward with a monstrous carry. He’s a cluster of code and data, a collection of metrics and percentiles. Something to plug into an algorithm to find the square root of X. Jacques Nienaber is a self-identifying ‘numbers guy’. He sees the game of rugby as if he’s plugged into the Matrix. That isn’t a hulking loose forward with a monstrous carry. He’s a cluster of code and data, a collection of metrics and percentiles. Something to plug into an algorithm to find the square root of X.