The veteran forward has 10 points (five goals, five assists) in 14 games for the Penguins this season. He has averaged 15:50 of ice time but played 13:27 on Saturday in a 2-1 overtime loss to the Edmonton Oilers. Hornqvist was on the ice for 15 shifts through the first two periods against Edmonton but played four in the third period and none in overtime.
Forward Bryan Rust, who has three points (one goal, two assists) in three games since returning from injured reserve because of an upper-body injury, skated in Hornqvist's spot on the second line during practice Sunday.
The Penguins play the Boston Bruins at TD Garden on Monday (7 p.m. ET; NHLN, SNE, SNO, SNP, TVAS, NESN, ATTSN-PT, NHL.TV).
NHL.com indepdenent correspondent Wes Crosby contributed to this report