Table: chelsea_1999_2000_season
Columns: date
round
opponent
venue
result
attendance
scorers

Question: Which round has the scorer of Di Matteo?
SQL: SELECT "round" FROM chelsea_1999_2000_season WHERE "scorers" = 'di matteo'

Question: What is the lowest attendance of a game that has the result of 2-0?
SQL: SELECT MIN("attendance") FROM chelsea_1999_2000_season WHERE "result" = '2-0'