Updated with Daniilidou entering the list @13. Congrats on her second entry to this list!
Top 200 Players with 5+ losses (after 2012 US Open)
#28 Klara Zakopalova (5)
#62 Barbora Zahlavova Strycova (7)
#74 Shahar Peer (6)
#82 Anne Keothavong (7)
#104 Julia Cohen (6)
#105 Michaella Krajicek (5)
#109 Kimiko Date Krumm (6)
#117 Jarmila Gajdosova (7)
#156 Patricia Mayr (5)
#158 Jill Craybas (5)
#199 Amra Sadikovic (6)