Spotted Sandpiper, Maybe

As most of the Mallards dozed, a very energetic smaller bird walked quickly along the shoreline, threading its way between the bigger birds.  After considerable searching, I found myself stumped as to its identity.  Its yellow legs and its neck are too short to be a Yellowlegs.  Its beak is yellowish and slightly turned downward.  It has a white eye stripe.  My best guess is that it’s a Spotted Sandpiper female in winter plumage.  A male in breeding plumage would have prominent trademark spots on its breast, but I found pictures of seasonal variations on the web that closely resemble this bird.  If you know better, please post a comment.