Puustinen, 22, leads all WBS skaters in his first professional season in North America with 17 goals, 34 points (17G-17A) and six power-play goals in 53 games. His 17 assists also rank second on WBS.
The 5-foot-9, 183-pound native of Kuopio, Finland spent the 2020-21 season with HPK of Liiga, Finland's top professional league, recording 41 points (21G-20A) in 51 games. His 21 goals led all HPK skaters and were tied for eighth in the league, while his 41 points were second-most on HPK.
Puustinen, who was selected in the seventh round (203rd overall) in the 2019 NHL Draft, is looking to become the first member of Pittsburgh's 2019 draft class, and just the fourth player selected after the fourth round that year, to see NHL action.
The Penguins return to the ice tomorrow night with a 7:00 PM tilt against the Vegas Golden Knights at PPG Paints Arena.