Watford boss Walter Mazzarri has made two changes to his starting line-up for Sunday afternoon&rsquo;s Premier Lague game against Middlesbrough at the Riverside Stadium.<br /><br />Nigeria youth international Isaac Success has been rewarded for his imperious display off the bench in the last fixture, as he has been named in the starting XI to face Boro. <br /><br />That change sees Super Eagles striker Odion Ighalo drop to the bench alongside Colombia international Zuniga.<br /><br />Italy international of Nigerian descent Stefano Okaka did not make the Hornets 18-man squad, and the same goes for U23 stars Ogo Obi and Ola Adeyemo. <br /><br /><b>Watford Starting XI</b> : Gomes (GK); Kaboul, Pr&ouml;dl, Britos; Amrabat, Capoue, Behrami, Holebas; Pereyra, Success; Deeney (c).<br /><br /><b>Substitutes</b> : Pantilimon (GK), Mariappa, Kabasele, Zuniga, Watson, Guedioura, Ighalo.<br /><br />Ifeanyi Emmanuel <br /><br /><br />