ADVANCE FOR WEEKEND EDITIONS, AUG. 27-28 FILE – In this Oct. 17, 2010 file photo, Pittsburgh Steelers linebacker James Harrison (92) hits Cleveland Browns wide receiver Mohamed Massaquoi (11) during the second quarter of a an NFL football game in Pittsburgh. Players ranted about the NFL’s crackdown on illegal hits last season. Some even questioned if the league was heading toward touch football. (AP Photo/Don Wright, File)
Seattle Seahawks wide receiver Percy Harvin (11) is woozy after taking a big hit during an NFL Divisional Playoff game against the New Orleans Saints on January 11, 2014. The Seahawks defeated the Saints 23-15 in the NFC Divisional Playoff Game. (AP Photo/Kevin Terrell)
Carcon Conley being carted off by a stretcher
Carcon conley carter off the field
New York Giants running back Saquon Barkley (26) gets helped off the field after getting hurt against the Tampa Bay Buccaneers during the first half of an NFL football game Sunday, Sept. 22, 2019, in Tampa, Fla. (AP Photo/Mark LoMoglio)
Vontaze Burfict helmet to helm et hit with AB
Jun 20, 2019; Bronx, NY, USA; New York Yankees right fielder Giancarlo Stanton (27) between innings against the Houston Astros at Yankee Stadium. Mandatory Credit: Noah K. Murray-USA TODAY Sports
Houston Rockets general manager Daryl Morey discusses the direction of the team with the media during a basketball news conference, Tuesday, April 19, 2011, in Houston, after the decision to part ways with NBA basketball head coach Rick Adelman. (AP Photo/Pat Sullivan)
DENVER, CO – OCTOBER 17: Patrick Mahomes #15 of the Kansas City Chiefs is helped off the field by trainers after sustaining an injury in the second quarter of a game against the Denver Broncos at Empower Field at Mile High on October 17, 2019 in Denver, Colorado. (Photo by Dustin Bradford/Getty Images)
DENVER, CO – OCTOBER 17: Patrick Mahomes #15 of the Kansas City Chiefs signals for help after sustaining an injury in the second quarter of a game against the Denver Broncos at Empower Field at Mile High on October 17, 2019 in Denver, Colorado. (Photo by Dustin Bradford/Getty Images)
Houston Texans defensive end J.J. Watt (99) is helped off the field after an injury during the first half of an NFL football game Sunday, Oct. 8, 2017, in Houston. (AP Photo/Eric Christian Smith)
Sep 10, 2019; Miami, FL, USA; Milwaukee Brewers right fielder Christian Yelich (22) is injured while at bat in the first inning against the Miami Marlins at Marlins Park. Mandatory Credit: Steve Mitchell-USA TODAY Sports