[
  { name: 'Jack Doe', racingNumber: 4, rating: 1100 },
  { name: 'Jane Doe', racingNumber: 2, rating: 1350 },
  { name: 'John Doe', racingNumber: 1, rating: 1500 },
  { name: 'Joe Doe', racingNumber: 3, rating: 1200 }
]
[
  [
    { name: 'Jack Doe', racingNumber: 4, rating: 1100 },
    { name: 'Jane Doe', racingNumber: 2, rating: 1350 }
  ],
  [
    { name: 'Jack Doe', racingNumber: 4, rating: 1100 },
    { name: 'John Doe', racingNumber: 1, rating: 1500 }
  ],
  [
    { name: 'Jack Doe', racingNumber: 4, rating: 1100 },
    { name: 'Joe Doe', racingNumber: 3, rating: 1200 }
  ],
  [
    { name: 'Jane Doe', racingNumber: 2, rating: 1350 },
    { name: 'John Doe', racingNumber: 1, rating: 1500 }
  ],
  [
    { name: 'Jane Doe', racingNumber: 2, rating: 1350 },
    { name: 'Joe Doe', racingNumber: 3, rating: 1200 }
  ],
  [
    { name: 'John Doe', racingNumber: 1, rating: 1500 },
    { name: 'Joe Doe', racingNumber: 3, rating: 1200 }
  ]
]
[
  { name: 'Jack Doe', racingNumber: 4, rating: 1135 },
  { name: 'Jane Doe', racingNumber: 2, rating: 1353 },
  { name: 'John Doe', racingNumber: 1, rating: 1477 },
  { name: 'Joe Doe', racingNumber: 3, rating: 1185 }
]