PA PhotosMattek-Sands and 2009 US Open quarter-finalist Oudin were among eight players to be handed spots in the final Grand Slam tournament of the year, which will take place at Flushing Meadow from August 27-September 9.
A former world number 30, Mattek-Sands will be competing in her 12th consecutive US Open while the 20-year-old Oudin will return to a venue where she clinched the mixed doubles title in 2011 with Jack Sock.
Among those also gaining wild card entries were Australia's Casey Dellacqua, Kristina Mladenovic of France and 2012 National Collegiate Athletic (NCAA) singles champion Nicole Gibbs.
