Less than six minutes into the NBA season and his debut with a new team, Boston Celtics forward Gordon Hayward landed awkwardly on his ankle,
suffering a traumatic injury that shook the sporting world. Though he remains the Celtics' highest-paid player this season, he hasn't stepped foot on a basketball court since.
At the time, Hayward's injury was the most gruesome one fans had witnessed all year -- but somehow, things only got worse from there.
SEE ALSO: Look back at the biggest sports moments of 2017
Several teams' 2017 campaigns have been marred by stars going down with broken bones, torn ACLs and frightening concussions. Partway through this NFL season, the list of stars lost to injury
began to look more like a Pro Bowl roster, and even more players have been hurt since then.
Carson Wentz, Jeremy Lin and Richard Sherman are just some of the household names headlining this year's list of injured athletes. Click through the slideshow below to see the rest of the major athletes who were sidelined this year -- that is, if you have a strong enough stomach.
The most devastating and impactful sports injuries of 2017
Warning: Some of these injuries may be difficult to look at. Viewer discretion is advised.
Brand new Boston Celtics forward Gordon Hayward
dislocated his ankle and fractured his tibia within the first few minutes of Boston's season opener against the Cleveland Cavaliers.
(Photo by Ken Blaze-USA TODAY Sports via Reuters)
Green Bay Packers quarterback Aaron Rodgers broke his collarbone on October 15, 2017 while playing against the Minnesota Vikings. Prior to Week 15, Rodgers said he had been
medically cleared to return.
(Photo by Hannah Foslien/Getty Images)
Seattle Seahawks cornerback Richard Sherman's season ended after a
ruptured Achilles tendon during Thursday Night Football.
(Photo by Christian Petersen/Getty Images)
Houston Texans defensive end J.J. Watt's season ended after he
injured his left knee on October 8.
(Photo by Leslie Plaza Johnson/Icon Sportswire via Getty Images)
On March 6, Andrew Bogut broke his leg less than one minute into his debut with the Cleveland Cavaliers.
(Photo by Gregory Shamus/Getty Images)
Johan Camargo of the Atlanta Braves fell to the ground running onto the field in a strange
(Photo by Kevin C. Cox/Getty Images)
New York Jets quarterback Josh McCown
broke his hand, ending his season after Week 14.
(Photo by Isaiah J. Downing-USA TODAY Sports via Reuters)
In the first game of the season, Eric Berry of the Kansas City Chiefs ruptured his Achilles tendon, ending his season.
(Photo by Maddie Meyer/Getty Images)
On October 8, Odell Beckham Jr. suffered a scary-looking injury to his ankle and was
carted off the field in tears.
(Photo by Noah K. Murray-USA TODAY Sports via Reuters)
Washington Nationals outfielder Bryce Harper suffered a bone bruise after landing awkwardly on first base during a game in August.
(Photo by G Fiume/Getty Images)
New England Patriots wide receiver Julian Edelman was ruled out for the entire season after tearing his ACL during a preseason game.
(Photo by Jorge Lemus/NurPhoto via Getty Images)
Rookie running back Dalvin Cook of the Minnesota Vikings tore his ACL during Week 4, ending his season.
(Photo by Brad Rempel-USA TODAY Sports via Reuters)
San Francisco Giants ace Madison Bumgarner missed 3 months of the 2017 season after suffering a shoulder injury in a dirt biking accident.
(Photo by Michael Thomas/Getty Images)
Running back David Johnson of the Arizona Cardinals dislocated his wrist during the Cardinals' season opener. It was announced that he would miss the entire season.
(Photo by Gregory Shamus/Getty Images)
New York Mets ace Noah Syndergaard was sidelined for much of the season after tearing a lat muscle in April.
(Photo by Joshua Sarner/Icon Sportswire via Getty Images)
Goalie Marc-Andre Fleury of the Vegas Golden Knights missed 25 games after taking a knee to the head on October 15.
(Photo by Jeff Bottari/NHLI via Getty Images)
Los Angeles Angels outfielder Mike Trout spent time on the disabled list for the first time in his career this season after tearing a ligament in his thumb. He missed 39 games.
(Patrick Farrell/Miami Herald/TNS via Getty Images)
Isaiah Thomas was sidelined by a hip injury during the Eastern Conference Finals. When he was later traded to the Cleveland Cavaliers, further issues with his hip nearly nullified the agreement.
(Photo by Nathaniel S. Butler/NBAE via Getty Images)
Impressive young quarterback Deshaun Watson of the Houston Texans
sustained an ACL injury during practice in November and was ruled out for the remainder of the year.
(Photo by Bob Levey/Getty Images)
Tom Savage, who took over for the injured Watson, suffered an
unsettling concussion during Week 14 play that had many questioning the NFL's injury protocol.
(Photo by Tim Warner/Getty Images)
Indianapolis Colts quarterback Andrew Luck
did not play a game in 2017 after undergoing shoulder surgery.
(Photo by Joe Robbins/Getty Images)
Anaheim Ducks forward Ryan Getzlaf took a puck to his face on October 29, sidelining him for up to two months after surgery.
(Photo by James Guillory-USA TODAY Sports via Reuters)
Jeremy Lin of the Brooklyn Nets will miss the entire season after
tearing a tendon in his knee during the team's season opener.
(Photo by Al Bello/Getty Images)
Philadelphia Eagles quarterback Carson Wentz went down in Week 14 with a
torn ACL, ending his season and shaking the team's Super Bowl hopes.
(Photo by Kevork Djansezian/Getty Images)