The last fixture where these 2 teams played on the Stamford Bridge ground, it ended with Chelsea 6 Arsenal 0. Although it might be another high scoring game but I do feel it will not be of such a thrashing again. Chelsea do not have headaches for injuries but Arsenal do have a few key names missing through injury.
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Chelsea has the benefit in their attacking sense with Cesc Fabregas linking well with Diego Costa. Fabregas has provided Costa with key passes which led to goals. Branislav Ivanovic and John Terry have both excelled in the defensive area thus not allowing their opponents to score. This game will be played at home and I believe Mourinho would be going all out to attack and secure all 3 points.
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Arsenal on the other hand is not consistent with their performance in the Premier League thus far. They have been winning matches some matches and then the next match they draw against their opponents. Welbeck hit his first hattrick for the Gunners during his midweek match against Galatasaray in the Champions League. He will have to prove himself week in week out in the Premier League for consistency and goals scored.
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My prediction for this match would be for Chelsea to win comfortably at home with the scoreline of 2-0. I believe Diego Costa will continue his run to score goals at Stamford Bridge. The only exception to this if someone can keep Fabregas and Costa at bay then Arsenal might have a chance to secure a point here. It would be a hard fought match by both the tacticians and it would definitely be something worth watching later.
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