To tell the truth, i really expect Middlesbrough to struggle in the relegation zone this season. It was a mere fluke when they beat Arsenal (who played without Febragas, Hleb and Rosicky). Beating Derby last round was routine as they're clearly the worst side in the comp. Sunderland, Wigan, Fulham, Birmingham and Middlesbrough will have to fight it out til the end of the season.
Thus, i will continue to back against Middlesbrough for most matches this season especially now when they're still overrated after that 2 wins.