Chelsea open up 7 point gap as bookies pay out
The win over the baggies saw Chelsea open up a seven-point lead at the Premier League summit as goals from Diego Costa and Eden Hazard secured a one-sided win.
Costa's chest down and volley got the ball rolling for Jose Mourinho's side.
Hazard was then gifted a cheap second after 25 minutes, firing home after West Brom switched off at a corner.
Claudio Yacob's two-footed lunge on Costa earned him a straight red card from Lee Mason, effectively ending the contest inside half an hour.
With Southampton leading the chasing pack - they play Villa on Monday - the Blues are long odds-on - as short as 1/10 for the title from 1/6.
Paddy Power, never afraid to court publicity - have paid out over £400,000 in Chelsea winning bets - the Blues started the season as 15/8 shots to lift the title - but are now shoe-ins with most layers as the likes of Manchester City, Liverpool and Arsenal all struggle.