Table: us_senior_open_results
Columns: year
champion
country
venue
location
score
winner_s_share

Question: What was the sum of the winner's shares for US Senior Opens won by Brad Bryant before 2007?
SQL: SELECT SUM("winner_s_share") FROM us_senior_open_results WHERE "champion" = 'brad bryant' AND "year" < 2007

Question: What was the winning score in 2000?
SQL: SELECT "score" FROM us_senior_open_results WHERE "year" = 2000

Question: What is the average winner's share won by Billy Casper?
SQL: SELECT AVG("winner_s_share") FROM us_senior_open_results WHERE "champion" = 'billy casper'