This is just Oxford's second league trip to Watford in the past 26 years.
The Hornets took the honours last season with a Vakoun Bayo goal sealing a 1-0 victory.
Watford have won four out of the past five home league meetings against Oxford United (L1) , conceding just two goals during this run.
Oxford United have won just three of their previous 25 league meetings with Watford (D11 L11), their last victory however being a 1-0 win in the pair's most recent meeting in March 2025. Prior to last season's meetings, the pair last played each other in the league in March 1999.