England batsman Kevin Pietersen is confident his side can chase a big total in the second innings of the first Test against Australia at Lord's.
The tourists are 314 ahead with three second-innings wickets left on a pitch that has occasionally misbehaved.
But Pietersen said: "The England boys have chased down really well the last couple of years. The wicket has eased up and is not as indented as it was.
"Hopefully it gets even flatter and it's a positive day for us tomorrow."
The Hampshire star added: "I think the key is to get through the new ball, Glenn McGrath and Brett Lee's first spell.
"If we can do that, do it positively and not lose too many wickets, we'll go okay."
The South African-born 25-year-old endured a mixed second day of his Test debut.
After cutting loose earlier in the morning to complete his 50, he was in the thick of the fielding action, failing to run out Damien Martyn and dropping Michael Clarke.
But he refused to dwell on any negatives, saying: "It's a great game, it brings you down to earth, it brings you down a notch or two and that's why we love it.
"I enjoyed my batting, my fielding started off okay - I ran out Justin Langer - and I missed a few chances when I could have hit the stumps and dropped Clarke.
"But dropped catches are part of cricket, there's no point going into it, it's just a case of concentrating on the job and England winning."