The Anaheim Ducks completed a series sweep over the Calgary Flames, as the Washington Capitals drew level with the Toronto Maple Leafs.
Anaheim asserted their claim to the top with a 3-1 win in game four to progress from their opening-round Western Conference playoff tie on Wednesday.
Patrick Eaves, Nate Thompson and Ryan Getzlaf scored for the Ducks, who swept a best-of-seven series for the fifth time in their history as they await either the Edmonton Oilers or the San Jose Sharks in the second round.
The Capitals prevailed 5-4 against the Maple Leafs to level their series at 2-2.
Washington raced out to a 4-1 lead in the opening period before Toronto rallied late on home ice but the Capitals held on in game four.
The Minnesota Wild needed a headstand from Devan Dubnyk to blank the St Louis Blues 2-0 and stave off elimination until at least game five.
Minnesota still trail St Louis 3-1.
The Ottawa Senators beat the Boston Bruins 1-0 for a 3-1 series lead.
T.J. Oshie, Capitals - Washington's top line was their best line, accounting for three goals in a critical victory in game four to pull even with the Maple Leafs. Oshie was credited with two of them - his first of the playoffs - including the one that stood as the game-winner when Toronto made things interesting in the final minute. Honourable mentions for line-mates Alex Ovechkin and Nicklas Backstrom for coming up big.
Craig Anderson, Senators - Anderson's 22-save shutout in game four has Ottawa one win from their first trip to the second round since 2013. What is more, the Bruins have never come back from down 3-1 to win a series (0-22 all time). It was the fourth doughnut of Anderson's playoff career and the veteran improved to 9-2 with a .928 save percentage in his last 11 games overall against Boston.
Devan Dubnyk, Wild - Dubnyk is hardly to blame for Minnesota's first-round hole. He made 28 saves in game four to singlehandedly keep the Wild's season alive, logging the second shutout of his playoff career.
Erik Karlsson, the Senators' do-it-all defenceman, should win the Norris Trophy this year as the NHL's best blueliner. He has certainly been at his best in the playoffs and made another magician-like pass to Bobby Ryan to set up the only goal of Ottawa's game-four victory.
Thursday's game to watch
Game 4: Blackhawks at Predators - It has been difficult through the years to define Blackhawks-Predators as a division rivalry, considering Chicago's domination on the head-to-head playoff ledger. This time, though, Nashville are in command and would achieve some serious payback if they deal the Western Conference's top seed an embarrassing first-round sweep.
20. September 2017
|Solomona focused on Sale rather than England return|
|‘Raging Bull’ Jake LaMotta dies aged 96|
|Chelsea confident of recruitment compliance amid FIFA investigation|
|Brighton seal permanent signing of Newcastle keeper Krul|
|Louw, Nkosi and Schreuder get Springboks call|
|Perez donates 3m pesos to Mexico earthquake fund|
|Injured Mathews out of opening Pakistan Test|
|Double leg break victim Rossi to attempt incredible Aragon GP return|
|Barcelona condemn Spanish crackdown on Catalonia independence vote|
|Muguruza marches past Puig, Pliskova and Kerber progress in Tokyo|
|Benzema seals Real Madrid stay until 2021|
|Smith defends captaincy ahead of landmark ODI|
|Perisic promised Inter can match Manchester United|
|The race is on - Aubameyang lays down Lewandowski challenge|
|Cristiano Ronaldo´s Real Madrid return confirmed|
|Bellew tells Haye ´I oblige you´|
|Mbappe can prove he´s ready for Madrid at PSG - Morientes|
|Five-year ban for Pakistan batsman Latif|
|PSG ´destroyed the market´ with Neymar and Mbappe - Elber|
|Bulldogs chairman says sacked Hasler will not be compensated|
|Coutinho withdrawal inspired Leicester to victory, claims Shakespeare|
|Windies opener Brathwaite cleared to bowl|
|Valverde hopes Suarez benefits from Eibar rest|
|Wilshere returning to his best form - Wenger|
|Yankees, Cardinals keep pace in postseason race|
|Klopp: Liverpool are still a good football team|
|Pochettino hails ´top player´ Alli|
|Messi from ´another planet´, says Semedo|
|James performance pleases Ancelotti|
|Gordon´s homer breaks MLB single-season home run record|
|Spieth feeling good ahead of Tour Championship|
|Thomas unsurprised by stunning season|
|Lakers confirm Bogut signing|
|Maestro Messi brings up 300 Camp Nou goals|
|Saints trade 2015 first-round pick Anthony to Dolphins|
|Messi is extraordinary – Valverde hails Barcelona star|
|Inter eyeing Champions League return - Eder|
|UCI reduces Grand Tour team sizes|
|Klopp ´sick´ of conceding as Liverpool tumble out of EFL Cup|
|Hodgson urges caution over Souare handling|
|Gasquet stunned by Istomin in Metz|
19. September 2017
|Barcelona 6 Eibar 1: Majestic Messi leads romp with four goals for LaLiga leaders|
|Burnley 2 Leeds United 2 (aet, 3-5 pens): Lonergan the penalty hero as Championship leaders cause cu|
|Matic and Fellaini have never been this good – Mourinho tells Carrick, Herrera to be patient|
|I´m the first to trust young players - Conte defends Chelsea youth record|
|Inconsistent Windies disappoint Holder|
|Bairstow pleased to take ODI chance|
|Tottenham 1 Barnsley 0: Alli sees off stubborn Tykes|
|Bologna 1 Inter 1: Contentious Icardi spot-kick maintains Spalletti´s unbeaten run|
|Leicester City 2 Liverpool 0: Okazaki, Slimani dump Klopp´s men out of EFL Cup|
|Schalke 0 Bayern Munich 3: James scores on first Bundesliga start|
|Atletico benefiting from competition of fringe players - Simeone|
|England centurion Bairstow ends West Indies´ World Cup hopes|
|Manchester City have got two players for every position - Delph|
|Peng digs deep to avoid Guangzhou upset|
|Youzhny and Troicki battle through in St. Petersburg|
|Rossi close to Aragon return after completing 20 laps|
|Bayern could say they don´t need me – Lewandowski accepts football´s cut-throat nature|
|PGA Tour releases 2017-18 schedule|
|Wasps dealt blow as Cipriani ruled out for 12 weeks|
|Montella to keep on rotating as he plans for long season|
|Billionaire investor announces he is ´done´ funding Hamburg|
|Van Vleuten leads Dutch one-two in Bergen time trial|
|World Cup success Gibson´s top priority with South Africa|
|Philander sidelined for first Bangladesh Test|
|Wenger confirms Welbeck groin injury|
|Ljungberg sad to leave Wolfsburg|
|Ferdinand, McGregor and Curry - Sport´s most notable crossover stars|
|Will Bellew put pen to paper? - Haye claims terms for rematch agreed|
|Messi has his story, I have mine - Dybala plays down compatriot comparisons|