Penguins' Maatta tests positive for mumps; Greiss, Bortuzzo cleared

The Pittsburgh Penguins have released the results of their latest round of testing for mumps.

Defenseman Olli Maatta has tested positive for the virus and remains in isolation, general manager Jim Rutherford announced Friday.

Goaltender Thomas Greiss and defenseman Robert Bortuzzo have tested negative.

The 20-year-old defenseman - who recorded one goal and eight assists in 20 games - also underwent surgery to remove a cancerous tumor from his thyroid earlier this season.