user: Question: What is the highest number of matches that has a round of Third Round?
Columns: ['Round', 'Date', 'Matches', 'Clubs', 'New entries this round', 'Prize money']
Types: ['text', 'text', 'real', 'text', 'text', 'text']
Sample row: ['First Round', '8 September 2008', 22.0, '68 → 46', '44', '£2,000']
SQL:

assistant: SELECT MAX("Matches") FROM "Table" WHERE "Round" = 'Third Round';