Vanecek turned aside 29 shots in regulation and overtime and seven of eight shootout attempts in Tuesday's 4-3 win over the Islanders.
The 26-year-old netminder has won five straight starts, posting a 2.36 GAA and .925 save percentage over that stretch. As long as Vanecek can stay healthy, he appears to be locked into the No. 1 job for Washington ahead of the struggling Ilya Samsonov (3.38 GAA and .899 save percentage since the beginning of February).