Odion Ighalo got on the scoresheet for Watford in their shock 2-1 win over Arsenal in the sixth round of the FA Cup at the Emirates on Sunday afternoon.<br /><br />The Nigeria international had scored 15 goals in all competitions but failed to find the net in his last seven games prior to the contest against the Gunners.<br /><br />Ighalo hit his 16th goal of the season in the 50th minute and <span class=\"name\">Adlene Guedioura struck thirteen minutes later to put the visitors 2-0 up before substitute </span><span class=\"name\">Danny Welbeck netted what turned out to be a consolation for Arsenal in the 88th minute.<br /><br />The Hornets number 24 was left isolated in the 18-yard box, half turned, before firing past Ospina. Few minutes later, he was in the Arsenal penalty area again and was ready to shoot but was put off by a defender.<br /><br />In the 68th minute, Alex Iwobi joined the fray and had two good opportunities to equalize right at the death but was unlucky not to score.<br /><br />On 90 minutes, the 19-year-old struck the post and his shot went just inches wide in the second minute of stoppage time.<br /><br />Scotland international Ikechi Anya came off the bench in the 73rd minute, while a tired Ighalo was subbed off eight minutes from time.<br /><br /><b>Ifeanyi Emmanuel</b><br /></span> <span class=\"ml4\"> </span>