Tyler Johnson scored, and Kevin Lankinen made 15 saves for the Blackhawks (26-42-11), who have lost four of their past five.
"The guys were trying, it's not from a lack of effort," Blackhawks interim coach Derek King said. "I think the one-on-one stuff, guys are trying to beat [opposing players] or trying things that maybe give us a spark... or trying to be the hero and it ends up backfiring sometimes. That's where we need to bring it in and start playing more of a team game when we're down like that."
Weatherby put San Jose up 1-0 at 6:03 of the first period when the rebound of an attempt by Sasha Chmelevski was tipped in his direction by Scott Reedy.
"We've got to play a [much] simpler game," Johnson said. "We turn the puck over way too much and when you do that, teams are going to beat you. It doesn't matter how good your team is, if you're not playing in structure, you're going to lose."
Hertl made it 2-0 at 1:08 of the second period. Meier forced a turnover that led to a 2-on-1 and he set the forward up with a cross-ice shot.
"There were a couple of guys, then me and Timo got the 2-on-1 and he just made a good play and I finally put it in," Hertl said.