LANDOVER, Md. — Robert Griffin III left Washington’s exhibition game against Detroit because of a stinger and a possible head injury.

The team initially said its starting quarterback was questionable to return Thursday night but later ruled him out.

Griffin was hurt in the second quarter when he fumbled the ball while scrambling, then got landed on by defenders. He stayed down for five minutes and was tended to by trainers. Upon exiting the field, he gave a thumb’s-up to spectators.

The 2012 NFL Offensive Rookie of the Year completed 2 of 5 passes for 8 yards and was sacked three times.

He fumbled twice. The second was recovered at Washington’s 11 by Detroit, which then needed four plays to score a touchdown for a 10-0 lead.

Backup Colt McCoy replaced Griffin.

COWBOYS: All-Pro guard Zack Martin said he’s OK after sustaining a neck stinger in practice.

CARDINALS: Two of Arizona’s most significant offseason acquisitions are injured, and one of them – nose tackle Corey Peters – is lost for the season with a torn left Achilles tendon.

Guard Mike Iupati will undergo surgery for a torn left meniscus and could miss five games.

JETS: Offensive lineman Oday Aboushi was suspended one game without pay for violating NFL substance-abuse policy.

ERIK KRAMER, a former North Carolina State quarterback and NFL player, was hospitalized after a reported suicide attempt at a motel in Calabasas, California.

Kramer, 50, suffered a non-life-threatening gunshot wound, according to NBC News.

Marshawn Kramer told NBC News that her former husband has been suffering from depression that she believes is related to his playing career.