A rematch of the Blues-Lightning Game 7 in 2012 was a close call in the third period as Blues forward Mike Hoffman left the game with a knee injury.
The game was stopped when Hoffman fell down.
The Blues ended up with a 4-3 win.
The Blues are 3-1-0 in the series.
They beat the Lightning in a shootout.
The Lightning played well in the first period, but had trouble finding the back of the net.
The Lightning led 3-2 going into the third.
The next goal by Lightning forward Alex Killorn gave the Blues a 3-0 lead at 3:07 of the second.
But the Blues took the lead back at 5:17 of the third with a goal from rookie defenseman Mattias Ekholm.
Nikolaj Ehlers tied it at 5 with a shot from the slot at 8:30 of the fourth.
The puck came to defenseman Matt Niskanen, who put it past goalie Anders Nilsson at 10:08 of the period.
The shot was off target, but Ehlers made a diving stop on Nilsson.
The Bolts were on the power play with 2:20 left in the game, but the Blues were able to capitalize.
Nikita Kucherov was able to make a pass to winger Alex Killens on the right side for a goal at 11:23.
Nikita Kucholov scored his second goal of the season at 11.56 of the first.
The Bolts had a power play chance, but Nilsson tipped the puck in from behind the net at 12:35.
Nikola Jeltsin was sent off in the second period for slashing goaltender Anders Nilson.
The defenseman was assessed a minor penalty for tripping and a game misconduct.
The incident was reviewed and the game was halted at 13:30.