When all is said and done, sometimes you just need to be lucky. Last weekend's penalty call on Laurent Koscielny could arguably have been the deciding factor in the win over Arsenal. Was it a penalty? Replays showed he got a clear touch on the ball but referee Anthony Taylor didn't think so. And hey, those things happen. Benteke coolly put Villa up 2-1, and later, with Koscielny dismissed after a second yellow, Arsenal started to panic, leading to a late sloppy defensive breakdown and nice run by Antonio Luna to seal the win. If Villa can keep it close at Stamford Bridge, with a bit of luck, anything can happen.