The two teams have been announced at the Riverside Stadium...
...where Aitor Karanka has made two changes to the Middlesbrough side that drew at West Ham 15 days ago. Gaston Ramirez comes in for Viktor Fischer while Alvaro Negredo replaces Jordan Rhodes up top. Antonio Barragan, Ben Gibson and Stewart Downing have started all eight Premier League games this season.
Watford manager Walter Mazzarri also makes two changes to his team following a draw, the 2-2 stalemate with Bournemouth before the international break. Defender Miguel Britos replaces Napoli loanee Juan Zuniga while Isaac Success makes his first Premier League start after making a scoring impression last time out. The Nigerian takes over in attack from compatriot Odion Ighalo
Middlesbrough: Valdes, Barragan, Chambers, Gibson, Friend, De Roon, Forshaw, Stuani, Ramirez, Downing, Negredo
Subs: Guzan, Ayala, Bernardo, Clayton, Fischer, Traore, Rhodes
Watford: Gomes, Kaboul, Prodl, Britos, Amrabat, Capoue, Behrami, Holebas, Pereyra, Success, Deeney
Subs: Pantilimon, Mariappa, Kabasele, Zuniga, Watson, Guedioura, Ighalo
Referee: Roger East