Markstrom (upper body) will miss 10-14 days, Jameson Olive of the Panthers' official site reports Tuesday.
Markstrom suffered an upper-body injury in Monday's practice after getting hit by a puck. He has posted a 3-1-1 record with one shutout, a 2.21 GAA and an .897 save percentage in six appearances this season. Akira Schmid could see most of the starts for the Panthers until Markstrom returns, but Cooper Black is also expected to see some playing time.