Table: ray_sefo_fights
Columns: date
result
opponent
location
method
round
record

Question: Which Opponent has a Method of tko, and a Location of elgin, illinois, usa on 2001-02-11?
SQL: SELECT "opponent" FROM ray_sefo_fights WHERE "method" = 'tko' AND "location" = 'elgin, illinois, usa' AND "date" = '2001-02-11'

Question: Which Round has a Location of auckland, new zealand, and a Method of tko on 1994-11-24?
SQL: SELECT AVG("round") FROM ray_sefo_fights WHERE "location" = 'auckland, new zealand' AND "method" = 'tko' AND "date" = '1994-11-24'

Question: Which highest Round has a Result of loss?
SQL: SELECT MAX("round") FROM ray_sefo_fights WHERE "result" = 'loss'

Question: Which Location has a Method of decision?
SQL: SELECT "location" FROM ray_sefo_fights WHERE "method" = 'decision'