Chelsea away support is strange, they can be right up there with travelling support amongst big clubs but for some reason they have never come to our ground in numbers, don't know why that is but I'm not expecting more than 2500 to travel. I base that on the playoff game, 1200, the opening game at the Riverside about 400-500 came, it was a Saturday 3pm KO, and even back in the day when they had 1000's of lads follow then they only had about 1400 come on a holiday period bank holiday( 3pm) when they were top of the league and looking like they would go up.
And even the recent 6th Rd FA Cup where they only sold about 400 before they were told not to sell anymore, that is still only 400 on sale for two days to their top bracket point holders , the other big 3 London Clubs would have sold out.
They just don't come to the Boro.