Gordon Hayward suffers fractured left ankle in first game with Celtics

CLEVELAND, OH - OCTOBER 17: Gordon Hayward #20 of the Boston Celtics is sits on the floor after being injured while playing the Cleveland Cavaliers at Quicken Loans Arena on October 17, 2017 in Cleveland, Ohio. 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 Gregory Shamus/Getty Images)

Players on both teams and fans reacted in horror, with hands over open mouths and stunned looks on their faces after the Celtics’ star free agent signing went down hard just minutes into his Boston career.

BEN VOLIN | ON FOOTBALL

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/17/BostonGlobe.com/Sports/Images/86c686e1a1ef4bbc94b6470e84d7e1d0-86c686e1a1ef4bbc94b6470e84d7e1d0-0.jpg These Falcons are having some issues. But they’re still dangerous

The Patriots’ defensive communication definitely will be tested.

ALCS: Yankees 6, Astros 4

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/18/BostonGlobe.com/Sports/Images/0965ba9a5b52440ca96105c56da28e0b-0965ba9a5b52440ca96105c56da28e0b-0.jpg Yankees storm back to win Game 4, tie ALCS

Aaron Judge hit a long home run in the seventh inning to spark the comeback.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/17/BostonGlobe.com/Sports/Images/3c7f5524af344422bae91e3cc549bf5f-3c7f5524af344422bae91e3cc549bf5f-0.jpg NFL discusses anthem demonstrations, but league policy unchanged

Owners, players and league and union reps focused addressing inequalities in the community.

Boston, MA: October 9, 2017: Former Red Sox infielder Alex Cora (pictured) has been mentioned as a possible replacement for fired Boston manager John Farrell (not pictured). Cora, shown in the visitor's dugout at Fenway Park, is currently the bench coach for the Houston Astros. The Boston Red Sox hosted the Houston Astros in Game Four of an ALDS baseball game at Fenway Park. (Jim Davis/Globe Staff).

PETER ABRAHAM

A closer look at three Red Sox managerial candidates

Here are the pros and cons on known candidates Brad Ausmus, Alex Cora, and Ron Gardenhire.

Alex Speier

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/17/BostonGlobe.com/Sports/Images/speierlede.jpg It makes sense for Red Sox to go all-in for next season

The urgency for upgrades is magnified when you consider what the competitive landscape will be the following season.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/08/BostonGlobe.com/Sports/Images/davis_boshous18_spts.jpg Hanley Ramirez and Eduardo Rodriguez have surgery

The Red Sox DH included a photo of himself in a hospital bed with the message “coming back stronger in’18.”

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/17/BostonGlobe.com/Sports/Images/Chin051517Celtics-WizardsGM7_Spt4-001.jpg Marcus Smart says there are no hard feelings from failed negotiations

The guard was unable to get an extension from the Celtics, who he said “wouldn’t budge” from their position.

EAST RUTHERFORD, NJ - OCTOBER 15: Running back Dion Lewis #33 of the New England Patriots celebrates his touchdown against the New York Jets during the second quarter of their game at MetLife Stadium on October 15, 2017 in East Rutherford, New Jersey. (Photo by Al Bello/Getty Images)

BEN VOLIN | ON FOOTBALL

Dion Lewis looks like he’s finally back to his explosive self

The running back’s numbers Sunday were modest, but he was mighty impressive against the Jets, in a variety of ways.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/17/BostonGlobe.com/Sports/Images/davis_boscharl5_spts.jpg Kyrie Irving says ‘it feels different’ being a visiting player in Cleveland

The new Celtic and his teammates are about to open the season against his former team, the Cavaliers.

The trade for Kyrie Irving following the signing of Gordon Hayward shaped the Celtics for the 2017-18 season.

John Tlumacki/Globe Staff/file

ADAM HIMMELSBACH

The inside story of the Celtics’ crazy offseason

The Celtics knew there would be change. But no one in their front office envisioned an offseason like this one.

GARY WASHBURN | ON BASKETBALL

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/16/BostonGlobe.com/Sports/Images/856843418.jpg Have Celtics upgraded enough to beat Cavaliers?

Cleveland has made significant changes, too, adding intrigue to a budding rivalry.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/16/BostonGlobe.com/Sports/Images/LEE_patriotsjets17_spts-13340.jpg Bill Belichick doesn’t see a team that’s struggling

The coach said it’s unrealistic to expect the Patriots to be playing at a Super Bowl level now.

CLEVELAND, OH - OCTOBER 17: Kyrie Irving #11 of the Boston Celtics consoles Gordon Hayward #20 after Hayward was injured while playing the Cleveland Cavaliers at Quicken Loans Arena on October 17, 2017 in Cleveland, Ohio. 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 Gregory Shamus/Getty Images)

Gregory Shamus/Getty Images

DAN SHAUGHNESSY

Celtics’ season changes in an instant

All of the plotlines of Tuesday’s season opener between the Celtics and Cavaliers disappeared when Gordon Hayward went down with a gruesome leg injury.

FLUTO SHINZAWA | ON HOCKEY

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/17/BostonGlobe.com/Sports/Images/974d67739306484c838fd75ed0e8fe8d-974d67739306484c838fd75ed0e8fe8d-0-14241-13386.jpg Bruins have lost some grit without Patrice Bergeron and David Backes

The two ailing players, who did participate in Tuesday’s practice, bring an important element.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/17/BostonGlobe.com/Sports/Images/8dbf4c3179fd413a855b329c1885e458-8dbf4c3179fd413a855b329c1885e458-0.jpg Patriots’ Mike Gillislee learns the value of ball control

The running back spent 34 snaps on the sideline on Sunday after losing a fumble in the victory over the New York Jets.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/18/BostonGlobe.com/Sports/Images/cfeb6dd2538745a89895f985e108cfae-cfeb6dd2538745a89895f985e108cfae-0.jpg Cowboys' Ezekiel Elliott gets another reprieve, will play Sunday

A federal judge granted a temporary restraining order blocking the NFL’s six-game suspension in the latest round of court rulings.

NBA PREVIEW 2017-18

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/16/BostonGlobe.com/Sports/Images/859190606-13366-kyvC--90x90@BostonGlobe.com.jpg What to look for around the NBA this season

What teams are on the rise and on the decline? Who are the MVP candidates and the top rookies?

NBA PREVIEW 2017-18

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/16/BostonGlobe.com/Sports/Images/856883746-13356-kaUG--90x90@BostonGlobe.com.jpg A team-by-team assessment of the NBA

Here’s how things are shaping up after a busy offseason that saw some teams reshape themselves.

Season Ticket Podcast

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/17/BostonGlobe.com/Sports/Images/seasonticket_300-13378.jpg Where do the Celtics fit in the NBA landscape this season?

Chris Mannix of Yahoo Sports’ The Vertical joined Chris Gasper to discuss the Celtics and the new NBA season.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/11/BostonGlobe.com/Sports/Images/7d0ea07277d845ea9e7c301580fa8b32-7d0ea07277d845ea9e7c301580fa8b32-13293.jpg Red Sox interview Brad Ausmus for managerial position

Ausmus and Dave Dombrowski have worked together, but the Sox top candidate is still Alex Cora.

Sports Log

San Antonio’s WNBA franchise moving to Las Vegas

MGM Resorts International bought team and will move it to Vegas to begin play in 2018.

10/22/2016 - Boston, MA - October 22, 2016: Eight-man crews compete in the Head of the Charles Regatta in Boston, MA on October 22, 2016. This weekends 52nd running of the Head of the Charles Regatta continues Sunday. (Craig F. Walker/The Boston Globe) Section: Sports reporter:

Craig F. Walker/Globe Staff

Your guide to the 2017 Head of the Charles Regatta

The 53rd running of the Head of the Charles Regatta is Oct. 21-22 in Boston. Here’s what you need to know.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/06/14/BostonGlobe.com/Sports/Images/06132008_GL13leww-6711519.jpg Paul Pierce says he has cleared the air with Ray Allen

The former Celtics teammates connected during a promotional trip to China.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/17/BostonGlobe.com/Sports/Images/lee_harvardyale3_spts-14120-14296-13394-U834025026061IK--90x90@BostonGlobe.com.jpg Harvard (barely) is the pick in Ivy League men’s basketball

Yale actually got more first-place votes in the media poll but the Crimson came out on top.

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/17/BostonGlobe.com/Sports/Images/2865efb8bad945929d3685db04dc69ac-2865efb8bad945929d3685db04dc69ac-0.jpg UMass near bottom of Atlantic 10 preseason basketball poll

The Minutemen were picked 12th out of 14 teams, ahead of only Fordham and Duquesne

Robert Morris University President Chris Howard (right) spoke at Monday’s forum at Harvard University. He was joined (from left) by UConn’s Susan Herbst, the NCAA’s Mark Emmert, and the Ivy League’s Robin Harris.

Jim Davis/Globe Staff

NCAA’s Mark Emmert discusses scandal, fallout at Harvard panel

“I find it impossible to believe that the only way people can sell shoes is by bribing youngsters,” the NCAA president said.

FILE - In this Oct. 20, 2016, file photo, Louisville head basketball coach Rick Pitino reacts to a question during a press conference in Louisville, Ky. Louisville's Athletic Association has officially fired coach Rick Pitino, Monday, Oct. 16, 2017, nearly three weeks after the school acknowledged that its men's basketball program is being investigated as part of a federal corruption probe. (AP Photo/Timothy D. Easley, File)

File/Timothy D. Easley/AP

Rick Pitino officially out as Louisville basketball coach

Pitino was unanimously ousted amid a federal bribery investigation into the basketball program.

Alex Speier

//c.o0bg.com/rf/image_90x90/Boston/2011-2020/2017/10/16/BostonGlobe.com/Sports/Images/503d80cbd7b3401d97cd875fc0197686-503d80cbd7b3401d97cd875fc0197686-0.jpg What will it mean if Red Sox exceed the luxury tax threshold in 2018?

Simply put, it’s complicated, but the amount of tax will be based on how far over the team goes in pursuit of power.