The Rangers started off the 2015–16 season well. After 18 games, they had a 14–2–2 record and a nine-game winning streak, which was eventually halted by Tampa Bay. However, the organization soon went downhill in the winter, losing three-straight games against the Montreal Canadiens, Boston Bruins and Philadelphia Flyers. They eventually posted a 4–7–2 record in December for only ten points. In January the Rangers started playing more efficiently, posting a fair 6–4–1 record, and improved in February by going on a 10–3–1 run without any back-to-back losses. On January 8, 2016 the Rangers traded Emerson Etem to the Vancouver Canucks for Nicklas Jensen and a sixth-round pick in the 2017 NHL draft. On February 28, the Rangers traded prospect Aleksi Saarela, a 2016 second-round draft pick, and a 2017 second-round draft pick for Carolina Hurricanes captain Eric Staal, who later left the team after the season. The Rangers finished the season with 101 points for back-to-back 100+ point seasons. Despite high hopes, the Rangers were eliminated by the Pittsburgh Penguins in the first round of the 2016 Stanley Cup playoffs in five games. On May 2, the Rangers agreed to terms with Antti Raanta on a contract extension, and on May 13, signed Pavel Buchnevich to an entry-level contract.. How many days after the Rangers agreed to terms with Antti Raanta on a contract extension did they sign Pavel Buchnevich to an entry-level contract?