SAM AT US OPEN

2018-08-28 -

■ 2007 ................ first round

■ 2008 ................ first round

■ 2009 ........... second round

■ 2010 ............. quarterfinals

■ 2011 ............................. won

■ 2012 ............ quarter-finals

■ 2013 .................. first round

■ 2014 ............ second round

■ 2015 .............. fourth round

■ 2016 ............ second round

■ 2017 ................ did not play