Goaltender Braden Holtby agreed to a two-year, $3.7 million contract extension with the Capitals, the team announced Monday. Holtby, 23, emerged on the scene last spring as he backstopped Washington through two rounds of the playoffs, and after a rough start to this compressed schedule, the Saskatchewan native is finding a rhythm in his first full NHL season. He’s 5-6-0 with a .896 save percentage and 3.37 goals-against average this year. But over the past two weeks, as he’s made six consecutive starts, Holtby has stopped 174 of the 188 shots he’s faced for a .925 save percentage. Holtby is slated to earn $1.7 million in 2013-14 and $2 million in 2014-15 under the new contract, and his salary cap hit will clock in at $1.85 million. This season, in the final year of his entry-level deal, Holtby will earn a prorated $600,000 salary and carries a salary cap hit of $637,777.