​Source: Andrew Leyden/Shutterstock.comChop Robinson did almost everything right. He beat his blocker, hit Patrick Mahomes square in the chest and forced an incompletion on a critical third down. Then he landed, and a yellow flag reopened one of the NFL’s oldest arguments.The roughing-the-passer call in Kansas City’s 24-10 win at Miami on Sunday has former players, analysts and fans asking whether the rule now expects defenders to do something physically impossible.The play that lit the fuseMiami trailed 14-10 late in the third quarter and had Kansas City pinned at its own 5-yard line. On third-and-9, Mahomes looked for Rashee Rice over the middle, and the pass fell incomplete.Robinson reached Mahomes just as the ball left his hand and took him to the turf. Officials flagged the Dolphins edge rusher for roughing the passer, handing Kansas City 15 yards and an automatic first down.A defensive holding call on Miami would have extended the drive anyway, but the extra yardage helped. The possession ended in a field goal, and the Chiefs pulled away to improve to 3-0.What the rulebook actually saysThe flag had nothing to do with a hit to the head or neck. Officials ruled that Robinson landed on Mahomes with all or most of his body weight, which is specifically prohibited under Rule 12, Section 2, Article 11.The rulebook says a defender tackling a passer in a defenseless posture must try to fall to the side or brace himself with his arms. It also bans “stuffing” a quarterback into the ground.Crucially, the rule leaves the decision to the referee’s judgment. Robinson did put an arm down to break his fall, but the crew decided it was not enough to keep his weight off the quarterback.Former players push back hardCBS Sports rules analyst Gene Steratore, a former NFL referee, backed the officials. He said Robinson came down with his full body weight, exactly the scenario the body-weight provision was written to penalize.Source: D’Avril Grant/Shutterstock.comPlenty of former players saw it differently. Richard Sherman questioned what else a defender could do short of not trying to make the play, and Hall of Fame receiver Terrell Owens also blasted the flag publicly.Fans piled on, too, with many arguing a pass rusher at full speed cannot simply stop his momentum in midair. The loudest complaint was a familiar one: that star quarterbacks get protection others never see.Inside the Dolphins locker roomRobinson, wearing a Guardian cap in a game for the first time after his most recent concussion, said he followed his coaching. “I did what I was taught and told to do,” he told reporters afterward.Dolphins coach Jeff Hafley agreed the hit looked clean. “I thought he hit him solid square on,” Hafley said, adding that Robinson tried his best to raise his hands and get out of the way.Mahomes did not dispute the force of the contact. “He got me for sure pretty good,” he said. “But that’s part of playing football.” Linebacker Jordyn Brooks sa