BOSTON (AP) - LeBron James scored 27 points and the Cleveland Cavaliers overcame a shoulder injury to Kevin Love to complete a first-round sweep of the Boston Celtics with a 101-93 victory Sunday.
Love left the court in the first quarter with a dislocated left shoulder, and J.R. Smith was ejected for swinging his arm at Jae Crowder, but the Cavaliers held on to win a series for the first time since 2010, before James left for Miami.
Now Cleveland gets extra time before facing the winner of the Chicago-Milwaukee series. The Bulls lead 3-1.
The Cavaliers led 57-36 at halftime even though James missed eight of 12 shots and Love left the game for good after becoming entangled with Boston's Kelly Olynyk while chasing a loose ball. Love immediately headed for the locker room.
The Cavaliers said Love would return to Cleveland with the team and receive additional examination, imaging and evaluation at Cleveland Clinic Sports Health over the next 24 hours before his status is updated.
The Celtics made it competitive by outscoring the Cavaliers 25-13 in the third quarter to cut the lead to 70-61. And when Smith was ejected less than two minutes into the period after a foul that injured Crowder, Boston became more aggressive, scoring the next six points, while Cleveland missed 16 of 20 shots in the period.
The Cavaliers won their first series since beating the Bulls in the opening round in 2010 before losing to Boston. James left for Miami two months later and Cleveland missed the playoffs the next four seasons before he returned this season.
The sweep was the Cavaliers' first since 2009, when they did it against Detroit and Atlanta before losing to Orlando in six games in the Eastern Conference finals.
The Cavaliers led 99-89 with 44 seconds left, but the Celtics didn't give up. Isaiah Thomas hit a layup and Avery Bradley sank two free throws to cut the lead to six before the ball went out of bounds off Kyrie Irving. But Gigi Datome missed a 3-pointer before Irving was fouled and made two shots.
For the Celtics, it was a swift end to a rebuilding season that lasted longer than expected. That followed a regular season in which they went a surprising 40-42, a 15-win increase over the previous season. And they have reason for optimism with four draft picks this year and the potential of four first-rounders next year.
They lost the first game against the Cavaliers by 13 points and the next two by eight each, even trailing by just three with 2:45 left before Love hit two 3-pointers.
The Cavaliers didn't need him Sunday.
Irving had 24 points for Cleveland and Iman Shumpert added 15.
Thomas and Jared Sullinger had 21 points apiece.
Cavaliers: James has reached the playoffs in each of his last 10 seasons, going to the finals five times and winning twice. He is 20-2 in his last 22 first-round games. ... Cleveland committed only eight turnovers and had four players with double-figure rebounds - Timofey Mozgov with 11 and James, Irving and Shumpert with 10 apiece.
Celtics: Crowder didn't return after the technical against Smith. ... Thomas missed his first 10 shots after missing seven of nine in Game 3. He finally connected with 5:21 left in the third quarter Sunday. That 3-pointer was Boston's first of the game after 11 misses.
Celtics rookie guard Marcus Smart apologized to his teammates after oversleeping and arriving late at the pregame shootaround. Smart usually starts, but coach Brad Stevens said he had decided to start Crowder instead even before Smart was late. Stevens held Smart out until early in the second quarter when he was Boston's sixth substitute to enter the game.
More on AOL
Sports potw for 4/20
Cavs sweep Celts as James scores 27 in 101-93 victory
Molly Renshaw of Loughboro University makes a touch turn during the Women's 200n Breaststroke Final on day two of the British Swimming Championships at Aquatics Centre on April 15, 2015 in London, England. (Photo by Clive Rose/Getty Images)
Alex Guerrero #7 of the Los Angeles Dodgers has his jersey pulled by a teammate as they celebrate his game winning walk off RBI single in the 10th inning against the Seattle Mariners at Dodger Stadium on April 13, 2015 in Los Angeles, California The Dodgers won 6-5 in ten innings. (Photo by Stephen Dunn/Getty Images)
Andrew Cashner #34 of the San Diego Padres is tagged out by Aaron Hill #2 of the Arizona Diamondbacks as he's caught off of second base during the third inning of a baseball game at Petco Park April 13, 2015 in San Diego, California. (Photo by Denis Poroy/Getty Images)
Jonathan Maidana of River Plate kicks the ball during a match between River Plate and San Jose as part of Group 6 of Copa Bridgestone Libertadores 2015 at Monumental Antonio Vespucio Liberti Stadium on April 15, 2015 in Buenos Aires, Argentina. (Photo by Gabriel Rossi/LatinContent/Getty Images)
Tom Lewis of England plays a shot during the first round of the Shenzhen International at Genzon Golf Club on April 16, 2015 in Shenzhen, China. (Photo by Stuart Franklin/Getty Images)
Pitcher Shelby Miller #17 of the Atlanta Braves fields a ground ball in the rain in the fourth inning of the game against the Miami Marlins at Turner Field on April 13, 2015 in Atlanta, Georgia. (Photo by Mike Zarrilli/Getty Images)
Kevin Hayes #13 of the New York Rangers is checked into the net during the first period against the Pittsburgh Penguins in Game One of the Eastern Conference Quarterfinals during the 2015 Stanley Cup Playoffs at Madison Square Garden on April 16, 2015 in New York City. The Rangers defeated the Penguins 2-1. (Photo by Bruce Bennett/Getty Images)
Paulo Orlando #16 of the Kansas City Royals is doused with water by teammates Salvador Perez #13 and Christian Colon #24 after the Royals defeated the Oakland Athletics 6-4 to win the game at Kauffman Stadium on April 17, 2015 in Kansas City, Missouri. Orlando drove in the winning run with a triple, his fourth triple out of his first five Major League career hits, and scored an insurance run in the 8th inning. (Photo by Jamie Squire/Getty Images)
Jarrod Dyson #1 of the Kansas City Royals is out at second base as he breaks up a double play attempt by Danny Santana #39 of the Minnesota Twins during the sixth inning of the game on April 16, 2015 at Target Field in Minneapolis, Minnesota. The Twins defeated the Royals 8-5. (Photo by Hannah Foslien/Getty Images)
Naomichi Ueda #23 of Kashima Antlers celebrates the first goal during the J.League match between Kashiwa Reysol and Kashima Antlers at Hitachi Kashiwa Soccer Stadium on April 16, 2015 in Kashiwa, Chiba, Japan. (Photo by Masashi Hara/Getty Images)
Jay Davies of Western Australia advanced in to round 3 of the Drug Aware Margaret River Pro after winning his round 2 heat at The Box on April 16, 2015 in Margaret River, Australia. (Photo by Kelly Cestari/WSL via Getty Images)
Vladimir Tarasenko #91 of the St. Louis Blues shoots the puck over Charlie Coyle #3 of the Minnesota Wild during Game One of the Western Conference Quarterfinals during the 2015 NHL Stanley Cup Playoffs at the Scottrade Center on April 16, 2015 in St. Louis, Missouri. (Photo by Dilip Vishwanat/Getty Images)
Corneille Coetzee races in the Men's 200m Backstroke during the New Zealand Swimming Championships at West Wave Waitakere on April 16, 2015 in Auckland, New Zealand. (Photo by Hannah Peters/Getty Images)
Anthony Davis #23 of the New Orleans Pelicans is fouled by Aron Baynes #16 of the San Antonio Spurs during the second half of a game at the Smoothie King Center on April 15, 2015 in New Orleans, Louisiana. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and or using this photograph, User is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Stacy Revere/Getty Images)
Goalie Eddie Lack #31 of the Vancouver Canucks sits dejectedly on the ice after Kris Russell #4 of the Calgary Flames (not pictured ) scored what proved to be the game winning goal in Game One of the Western Conference Quarterfinals during the 2015 NHL Stanley Cup Playoffs at Rogers Arena on April, 15, 2015 in Vancouver, British Columbia, Canada. The Flames defeated the Canucks 2-1. (Photo by Rich Lam/Getty Images)
Nicholas Grainger of Sheffield starts the Men's 400m Freestyle Final on day one of the British Swimming Championships at Aquatics Centre on April 14, 2015 in London, England. (Photo by Clive Rose/Getty Images)
Maarty Leunen (L) of Ulm and Jannik Freese (R) of Berlin look fot the ball during the Beko Basketball Bundesliga match between Ratiopharm Ulm and Alba Berlin at ratiopharm Arena on April 19, 2015 in Ulm, Germany. (Photo by Matthias Hangst/Bongarts/Getty Images)
Corey Perry #10 of the Anaheim Ducks reacts to his goal in front of Blake Wheeler #26 of the Winnipeg Jets during the third period in Game One of the Western Conference Quarterfinals during the 2015 NHL Stanley Cup Playoffs at Honda Center on April 16, 2015 in Anaheim, California. Video replay was used to determine the goal. (Photo by Harry How/Getty Images)
Dee Gordon #9 of the Miami Marlins is unable to turn the double play as Michael Cuddyer #23 of the New York Mets is out at second base on April 18, 2015 at Citi Field in the Flushing neighborhood of the Queens borough of New York City.Eric Campbell of the New York Mets was safe at first. (Photo by Elsa/Getty Images)
James Harden #13 of the Houston Rockets reacts to a three-point shot against the Dallas Mavericks during Game One in the Western Conference Quarterfinals of the 2015 NBA Playoffs on April 18, 2015 at the Toyota Center in Houston, Texas. NOTE TO USER: User expressly acknowledges and agrees that, by downloading and/or using this photograph, user is consenting to the terms and conditions of the Getty Images License Agreement. (Photo by Scott Halleran/Getty Images)
Jake Allen #34 of the St. Louis Blues makes a save against the Minnesota Wild during Game Two of the Western Conference Quarterfinals during the 2015 NHL Stanley Cup Playoffs at the Scottrade Center on April 18, 2015 in St. Louis, Missouri. (Photo by Dilip Vishwanat/Getty Images)
Adam Federici of Reading stretches for the ball as he fails to stop a shot by Alexis Sanchez of Arsenal for their second goal during the FA Cup Semi Final between Arsenal and Reading at Wembley Stadium on April 18, 2015 in London, England. (Photo by Mike Hewitt/Getty Images)
Nico Rosberg of Germany and Mercedes GP drives during qualifying for the Bahrain Formula One Grand Prix at Bahrain International Circuit on April 18, 2015 in Bahrain, Bahrain. (Photo by Clive Mason/Getty Images)
Dennis Armfield of the Blues is tackled by Martin Gleeson of the Bombers during the round three AFL match between the Carlton Blues and the Essendon Bombers at Melbourne Cricket Ground on April 18, 2015 in Melbourne, Australia. (Photo by Michael Dodge/Getty Images)
Josh Lamb launches off the blocks at the start of the 200m Breaststroke Final during day three of the Arena Pro Swim Series at the Skyline Acquatic Center on April 17, 2015 in Mesa, Arizona. (Photo by Chris Coduto/Getty Images)
Dusty Hernandez-Harrison is punched in the face by Chris Gray during their Junior Middleweight bout at throne boxing presented by Roc Nation Sports Live on Fox Sports 1 at Foxwoods Resort Casino on April 17, 2015 in Mashantucket, Connecticut. (Photo by Rich Schultz/Getty Images for Roc Nation Sports)
Matt Carpenter #13 of the St. Louis Cardinals scores a run against Brayan Pena #29 of the Cincinnati Reds in the first inning at Busch Stadium on April 17, 2015 in St. Louis, Missouri. (Photo by Dilip Vishwanat/Getty Images)
Adam Peaty of County of Derby (L) competes in the Men's 100m Breaststroke Final on day four of the British Swimming Championships at the London Aquatics Centre on April 17, 2015 in London, England. (Photo by Clive Rose/Getty Images)
DORTMUND, GERMANY - APRIL 18: Pierre-Emerick Aubameyang (17) of Borussia Dortmund celebrates after scoring his teams second goal during the Bundesliga match between Borussia Dortmund and SC Paderborn at Signal Iduna Park on April 18, 2015 in Dortmund, Germany. (Photo by Lars Baron/Bongarts/Getty Images)
Novak Djokovic of Serbia celebrates the ball boys and girls with the winners trophy after defeating Tomas Berdych of Czech Republic in the final during day eight of the Monte Carlo Rolex Masters tennis at the Monte-Carlo Sporting Club on April 19, 2015 in Monte-Carlo, Monaco. (Photo by Julian Finney/Getty Images)