The Collaborative International Dictionary of English v.0.48:

Worst \Worst\, v. t. [imp. & p. p. Worsted; p. pr. & vb. n.
   Worsting.] [See Worse, v. t. & a.]
   To gain advantage over, in contest or competition; to get the
   better of; to defeat; to overthrow; to discomfit.
   [1913 Webster]

         The . . . Philistines were worsted by the captivated
         ark.                                     --South.
   [1913 Webster]