The sellout crowd for Game 4 had barely settled in its seats when Blues defenseman Roman Polak turned over the puck near his own net, and Nolan scored his first career playoff goal just 4:36 in.
St. Louis managed just one shot in the first 11 minutes, but evened the score with its second — a rocket from Shattenkirk, who scored a rare clean goal against Quick.
Brown put the Kings back ahead late in the period with his first goal of the second round, using Blues defenseman Alex Pietrangelo as a screen for a sneaky shot to beat Elliott.
While St. Louis dominated the second period with solid forechecking, the Kings fell into one of their biggest funks of the postseason, managing just one shot in the first 18 minutes.
St. Louis again dominated early in the third, and Matt D'Agostini's deflected shot barely caught Quick's crossbar early on. During 4-on-4 play a few minutes later, David Perron nearly scored on a rebound before Kopitar slid into the crease and knocked the puck underneath Quick.
NOTES: Los Angeles' power play is in a 1-for-37 slump, but the Kings also held St. Louis scoreless on 17 power plays in the series. ... St. Louis' Chris Stewart held his finger to his lips to shush the crowd after beating up Nolan in a first-period fight. ... Kobe Bryant, Landon Donovan, Matt Kemp and Andre Ethier all appeared on scoreboard videos pumping up the crowd and urging on the Kings. Bryant, who attended a Kings game late in the season with his daughters, wore a white Kings jersey.