Source: Bills checking out QB Mettenberger

The Buffalo Bills have representatives in Baton Rouge, La., Wednesday to check out former LSU quarterback Zach Mettenberger's pro day, a source tells ESPN.com.

Buffalo was 28th in passing last season and has one of the NFL’s least-experienced group of quarterbacks. EJ Manuel, Thad Lewis, Jeff Tuel and Dennis Dixon have all combined for just 20 career starts.

Mettenberger is one of the most intriguing quarterback prospects in this year’s draft. He threw for 3,082 yards, 22 touchdowns and eight interceptions for LSU before a season-ending knee injury last November hurt his stock. Wednesday marks the first time Mettenberger will throw in front of pro scouts since the injury.

Most project Mettenberger to be a second-round pick. He's considered in the second tier of quarterbacks prospects behind Blake Bortles, Teddy Bridgewater and Johnny Manziel.