Baltimore Ravens tight end Dennis Pitta underwent surgery and will miss the entire season after dislocating his hip in practice Saturday, a league source told ESPN.com.

The injury occurred when Pitta collided with safety James Ihedigbo in the back of the end zone vying for a pass from Joe Flacco.

The Ravens re-tweeted the ESPN story, but general manager Ozzie Newsome did not immediately answer a text message from The Associated Press seeking information on Pitta's status. Coach John Harbaugh called it "a serious injury."

Pitta's 61 catches were tied for second with Ray Rice on the Ravens last season behind Anquan Boldin.

Eagles: Philadelphia wide receiver Jeremy Maclin tore the ACL in his right knee during practice and might miss the season. Maclin went down at the end of a noncontact drill in Philadelphia's second full practice under new coach Chip Kelly.

Maclin led the Eagles with 69 catches for 857 yards and seven touchdowns last season. Two-time Pro Bowl wide receiver DeSean Jackson is Philadelphia's other starter.

Cardinals: Former Raiders quarterback Carson Palmer arrived at Arizona's camp highly motivated. He said that at this stage of his career, it's about winning now, and he senses the same sentiment among his teammates.

"The one good thing you look at is that guys are flying around, guys are excited to be out there, guys are excited to get going," Palmer said. "There's not the attitude of 'Let's get through camp,' there's an attitude of 'Let's get better.' "

The Cardinals, in dire need of a quarterback after a disastrous 2012 season, sent only a sixth-round draft pick to Oakland to get Palmer, then signed him to a two-year, $16 million contract.

Browns: Offensive tackle Ryan Miller sustained a concussion during a one-on-one blocking drill in practice and was briefly hospitalized. Miller was carted from the field after he was hurt at the team's indoor facility.

Seahawks: Wide receiver Percy Harvin will get a second opinion on his sore hip next week in New York, and Seattle coach Pete Carroll said all options remain for how the injury is handled. ... Linebacker O'Brien Schofield has been claimed off waivers from Arizona.

The Associated Press contributed to this report.