Chad Greenway was excited about his chance to play in an NFL game last week, but he’s more excited that he gets to play in another.

“It felt natural, I felt like a football player again,” Greenway said. “The best part is that I get to come back out here and do it again this week.”

Greenway, the Vikings’ first-round draft choice in 2006, injured his knee early in the first preseason game covering a kickoff. He had surgery and was placed on injured reserve.

Last week, in the preseason opener against St. Louis, Greenway was back on the Metrodome turf, trying not to think about how his rookie season ended so abruptly.

“I focused on what I needed to do to play well,” Greenway said. “I want to show that I belong as a starter on this football team.”

Greenway was on the field for 11 plays and made one tackle.

“I really saw him attack a screen out on the flat,” coach Brad Childress said. “It’s just a matter of keeping his pads down and keeping him playing with leverage. He is a fast, fast guy.”

Offense struggles

During one period of full-teams drills Tuesday morning, the defense dominated the offense, which made several mistakes. Tight end Visanthe Shiancoe dropped a couple of passes, and receiver Todd Lowber missed one.

The protection wasn’t very good as Ray Edwards made a pair of sacks and Pat Williams had one. Safety Tank Williams made an interception, and cornerbacks Antoine Winfield and Ronyell Whitaker each nearly had one.

“It’s important that the guys continue to focus here the last couple of days (of camp),” offensive coordinator Darrell Bevell said. “We don’t want any senior-itis when they are getting out of here.”

Glenn retires

Linebacker Jason Glenn, plagued by recurring knee problems, retired on Tuesday. Childress said that Glenn made an emotional speech in front of the team Monday night before leaving camp. He injured his left knee early at camp. “He said his body couldn’t take it anymore,” said Childress,