No Provorov on either roster?
Maybe not all roster locks need to be dressing for the first preseason games.
For the 7pm game they have 3 locks (Werenski, Severson, Gudbranson) and 3 AHL/CHL-bound guys (Mateychuk, Bjork, Svozil) on defense.
For the 1pm game there are 5 competing-for-remaining-2RD/3LD-spots guys (Peeke, Boqvist, Jiricek, Berni, Blankenburg) and 1 AHL-bound player (Christiansen).
Of course that might not be the actual reasoning behind D lineup decisions but that's how I kinda see it. As excited as I am to watch Mateychuk and Svozil play later, the 1pm game still seems more interesting because of the implications it may have for roster decisions on defense.
Edit. Projected Penguins lineups (from the GDT on their board):
1:00 PM at PPG Paints Arena:
Forwards
9 Marc Johnstone
10 Drew O’Connor
11 Alex Nylander
18 Andreas Johnsson
34 Peter Abbandonato
37 Matt Filipe
41 Evan Vierling
47 Sam Houde
62 Brayden Yager
63 Radim Zohorna
64 Matthew Soto
70 Dillon Hamaliuk
83 Matt Nieto
Defensemen
2 Chad Ruhwedel
42 Libor Hajek
50 Andre Anania
52 Mark Friedman
53 Dmitri Samorukov
73 P.O Joseph
78 Isaac Belliveau
Goaltenders
30 Joel Blomqvist
39 Alex Nedeljkovic
7:00 PM at Nationwide Arena:
Forwards
12 Corey Andonovski
13 Vinnie Hinostroza
15 Joona Koppanen
16 Rem Pitlick
22 Sam Poulin
23 Jagger Joshua
25 Austin Wagner
26 Austin Rueschhoff
36 Colin White
44 Jonathan Gruden
48 Valtteri Puustinen
85 Avery Hayes
Defensemen
3 Jack St. Ivany
4 Taylor Fedun
5 Ryan Shea
6 Mark Pysyk
24 Ty Smith
32 Justin Lee
61 Xavier Ouellet
Goaltenders
33 Taylor Gauthier
45 Magnus Hellberg