Football matches is now becoming difficult to predict especially EPL matches the fact that Aston Villa is having a good runs against big teams does not translate to a must  win against Sheffield United though the odd favors them to win and their desire or ambition to top the table briefly before Liverpool vs Arsenal match would also motivate the team to claim all the three points, however in matches like today game upset can happen such that Sheffield United though last on the EPL table might opt to play a defensive game and launch counter attack and it's a fact relegation battling teams are usually tough to play so Aston Villa should be well prepare to play a tough match.