In the 2017–18 season, Crosby appeared in all 82 of Pittsburgh's regular season games for the first time in his career, finishing with 29 goals and 60 assists for 89 points. On February 12, 2018, he scored his 400th NHL goal, becoming the 95th player to reach the milestone. On March 21, he recorded his 700th career NHL assist. The Penguins began their 2018 playoff campaign against the Philadelphia Flyers. In Game 1 of the Battle of Pennsylvania, Crosby recorded a natural hat-trick in a 7–0 win. On April 18, in Game 4, Crosby passed Mario Lemieux as the Penguins' all-time playoff points leader with 173. The Penguins ultimately defeated the Flyers in six games, with Crosby scoring 6 goals and 13 points. After the series, retired Hockey Hall of Fame centre Bryan Trottier said of Crosby, "Sid has a wonderful gift to maintain his composure and not get rattled. You like the emotion he shows, too. I think he fires his team up, and that's why he's wearing the 'C' captain." The Penguins were eventually eliminated in Game 6 of the second round by the eventual Stanley Cup champion Washington Capitals, ending Penguins's bid for a three-peat. Crosby finished with 21 points (9 goals and 12 assists) in 12 games, pushing his career playoff total to 185, tied with Steve Yzerman for tenth-most all-time.