Berekum Chelsea coach Hans Van der Pluijm says his players must double up efforts if they are to win the 2012 CAF Champions League.

The Dutchman ensured his side overcame a poor first performance to earn a respectable 2-2 with TP Mazembe on Sunday in Lubumbashi.

The 2011 Ghanaian champions, making their debut in the continent's flagship inter-clubs competition, are yet to lose a match after two rounds of games.

Chelsea's next assignment will be against six-time winners Al Ahly in Cairo on August 4.

"Everything is open and it is up to us to show that," Van der Pluijm said in a post match interview.

"We played a very good second half and everything is dependent on the determination and confidence and we can show that in our next match."

Chelsea are now in second place in Group B; two points behind leaders Al Ahly.