London: India's bowling coach Eric Simmons has defended RP Singh's inclusion in the team for the ongoing fourth and final cricket Test against England, saying he was preferred over Munaf Patel because of his ability to swing the ball.

RP Singh, who joined the Indian squad midway through the England tour as a replacement for an injured Zaheer Khan, looked out of sorts and far from match fit in the ongoing Test.

The left-arm pacer has been away from the cricket field for the last three months and the lack of match-practice was quite evident in his bowling during England's first innings.

"We needed to get the balance right. Praveen was injured and we needed a swing bowler and RP can swing. We didn't want too much of the same attack," Simmons said after the third day's play on Saturday.

"He (Munaf) was spoken to about the decision and why it was made and he understood it from the team's perspective."

Asked about the difference in the quality in the spin departments of the two teams, he said, "When you have 500 runs behind, you can have men around the bat. Till this match, we matched each other in spin department. (Graeme) Swann also knows his conditions and he has the home advantage."

Simmons also said that Zaheer's injury at the start of the tour has nothing to do with India's dismal performance, insisting that the visitors simply didn't get the momentum going in their favour.