ENG series not the toughest says Sreesanth

 India have been outplayed by England in the ongoing Tests but seamer S Sreesanth says despite the hammering, it is nowhere close to being the toughest series he has been part of. Down 0-3 in the four-match series, India have lost their numero uno status in the ICC Test rankings but Sreesanth said it is still not the toughest challenge he has faced
Sreesanth said it wasn't due to lack of effort but due to the fact that England are playing like the number one Test team in the world.
"We began well but then after lunch they took charge — all credit to them. It wasn't bad bowling, they kept charging at us.
"They attacked, they stayed, they kept leaving good balls, not fetching outside the off-stump."
"I won't say it is the most difficult series I have played in," said Sreesanth, adding, 
"But it is definitely one of the toughest.
"The series against South Africa in 2008 was tougher, though."