CREATE TABLE table_52723 ("Tournament" TEXT, "Starts" FLOAT, "Top-10s" FLOAT, "Wins" FLOAT, "Earnings  ( $ ) " TEXT)

In the tournament of HSBC Champions, what was the sum of the Starts with Wins lower than 0?
SELECT SUM("Starts") FROM table_52723 WHERE "Tournament" = 'hsbc champions' AND "Wins" < '0'
SELECT SUM("Starts") FROM "table_52723" WHERE "Tournament" = 'hsbc champions' AND "Wins" < '0'