LONDON (AP) -- Australia continued to build a big score on the second day of the second Ashes test on Friday despite the loss of two wickets, including opener Chris Rogers for 173.
Steve Smith was 168 not out as Australia went to lunch on an imposing 424-3.
Australia resumed on 337-1 and Rogers was hit on the head by a James Anderson bouncer from the first ball of the day, and needed treatment for a graze. Rogers missed two games in Australia's recent tour of the West Indies after suffering concussion when he was hit on the head in the nets.
Rogers added 25 to his overnight score when he was bowled by Stuart Broad's inswinging delivery that found an inside edge and glanced his pad before hitting the stumps.
He lasted for 300 balls, and hit 28 fours.
Rogers' and Smith's partnership of 284 from 485 balls was a second-wicket record for Australia at Lord's.
Smith, 129 overnight, remained comfortable against the England bowling attack on a placid pitch offering little assistance.
However, captain Michael Clarke never looked settled at the crease after waiting more than a full day to bat. He scored just 7 from 32 deliveries when he mistimed a pull off the bowling of Mark Wood and presented Gary Ballance with a catch at square leg.
Clarke was out with the score on 383, and Smith and Adam Voges saw the game out to lunch.
Voges was on 24, as Australia scored 87 in the morning session.
Voges survived a leg before appeal that was reviewed by England after being given not out.