With Crosby's initial three-year, entry-level contract set to expire at the end of the following season, the Penguins signed him to a five-year, $43.5 million contract extension on July 10, 2007, ensuring his stay with the Penguins through the 2012–13 season. Midway through the subsequent season, Crosby recorded a Gordie Howe hat-trick on December 20, 2007, in a game against the Boston Bruins. His first assist came 55 seconds into the first period. At 8:26 of the same period, Crosby scored to give the Penguins a 2–0 lead. Then, five minutes and nine seconds into the second frame, Crosby fought ex-Penguin defenceman Andrew Ference to complete the hat-trick. This was Crosby's first NHL fight. In the NHL's first Winter Classic (with a record crowd of 71,217 fans in attendance), Crosby scored the shootout winner in heavy snowfall to defeat the Buffalo Sabres. However, two weeks later, on January 18, 2008, Crosby suffered a high ankle sprain crashing leg-first into the boards in a game against the Tampa Bay Lightning. As a result, he missed the 2008 All-Star Game, to which he was named a starter. After missing 21 games, he returned on March 4 against the Lightning and earned an assist. However, two games after his return, he felt his ankle was not up to shape and decided that he needed more time for it to heal. Crosby consequently sat out of the Penguins' next seven games and returned on March 27, 2008 to help the Penguins defeat the New York Islanders 3–1. Despite his injury-shortened campaign, Crosby still managed 72 points in just 53 games.