Table: philipp_petzschner_grand_slam
Columns: tournament
2009
2010
2011
2012

Question: what is the tournament when in 2012 the performance was 2r?
SQL: SELECT "tournament" FROM philipp_petzschner_grand_slam WHERE "2012" = '2r'

Question: what is the tournament with the performance in 2010 and 2011 is 1r?
SQL: SELECT "tournament" FROM philipp_petzschner_grand_slam WHERE "2010" = '1r' AND "2011" = '1r'

Question: what is the 2012 performance when in 2011 is qf and 2010 is 3r?
SQL: SELECT "2012" FROM philipp_petzschner_grand_slam WHERE "2011" = 'qf' AND "2010" = '3r'

Question: what is the tournament when 2011 is qf and 2012 is sf?
SQL: SELECT "tournament" FROM philipp_petzschner_grand_slam WHERE "2011" = 'qf' AND "2012" = 'sf'

Question: what is the tournament when the performance in 2012 is 3r and 2011 is qf?
SQL: SELECT "tournament" FROM philipp_petzschner_grand_slam WHERE "2012" = '3r' AND "2011" = 'qf'

Question: what is the 2011 performance for the US open?
SQL: SELECT "2011" FROM philipp_petzschner_grand_slam WHERE "tournament" = 'us open'