CREATE TABLE table_50644 ("Tournament" CLOB, "2000" CLOB, "2001" CLOB, "2002" CLOB, "2003" CLOB, "2004" CLOB, "2005" CLOB, "Career SR" CLOB, "Career Win-Loss" CLOB)

What is Tournament, when 2001 is '1R'?
SELECT "Tournament" FROM table_50644 WHERE "2001" = '1r'
SELECT "Tournament" FROM "table_50644" WHERE "2001" = '1r'