user: Question: What's Trina Gulliver's high checkout?
Columns: ['Player', 'Played', 'Sets Won', 'Sets Lost', 'Legs Won', 'Legs Lost', '100+', '140+', '180s', 'High Checkout', '3-dart Average']
Types: ['text', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'real', 'text']
Sample row: ['Trina Gulliver', 3.0, 5.0, 2.0, 17.0, 9.0, 35.0, 8.0, 7.0, 125.0, '78.36']
SQL:

assistant: SELECT "High Checkout" FROM "Table" WHERE "Player" = 'Trina Gulliver';