Metcalf is expected to face a sanction from the NFL. (Getty Images: Nic Antaya)
In short:
Pittsburgh wide receiver DK Metcalf took a swing at a rival spectator after a verbal exchange during the game against Detroit.
After Pittsburgh held on for 29-24 win over the Lions, Steelers coach Mike Tomlin said he hadn't seen the incident.
What's next?
The NFL will review the game and Metcalf could face discipline.
Steelers receiver DK Metcalf took a swipe at a spectator leaning over the front-row railing at Ford Field during Pittsburgh's 29-24 win over the Detroit Lions on Sunday.
Metcalf and the apparent Detroit fan, in a black-and-blue shirt and blue wig, exchanged words before the two-time Pro Bowler threw a right hand toward the man's face.
Metcalf did not appear to make much, if any, contact.
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"I heard about it, but I hadn't seen it," Steelers coach Mike Tomlin said. "I hadn't had an opportunity to talk to DK."
Although there was no penalty flag thrown on the field, the league will review the incident and Metcalf could face discipline.
He finished with four receptions for 42 yards.
The 28-year-old Metcalf is in his first season with the Steelers after spending six seasons with Seattle.
Pittsburgh held on for 29-24 win over the Lions when Jared Goff's touchdown on the final play was negated by an offensive pass-interference penalty on Amon-Ra St. Brown.
"It's been playoff-type football for us the last three weeks," Aaron Rodgers said.
The Steelers (9-6) have won three straight after a midseason slump, surging into the AFC North lead with two games remaining.
"I'm just so appreciative of the men that I work with and the fight they displayed individually and collectively," coach Mike Tomlin said.
"Certainly weren't perfect, a lot of adversity, some of it created by us. But they didn't blink and that's what's required this time of year."
In a couple of weeks, the Lions may have a chance to sleep in because their season will probably be over.
They almost pulled off an amazing comeback after trailing by 12 points with four-plus minutes left, but had two touchdowns negated by penalties in the final minute.