The No. 1 Lincoln Sudbury girls’ soccer team bounced back from its first loss of the season to defeat No. 19 Acton-Boxborough, 1-0, Thursday.

 The Colonials (8-6-3, 3-3-1) posed a difficult challenge for the Warriors (14-1, 7-1), who had clinched the Dual County League (Large) championship but were coming off a setback against 10th-ranked Westford.