This doesn't necessarily mean Upshaw is dealing with an injury. Players who fail the team's conditioning test, and coach John Harbaugh has a difficult one, are placed on the non-football injury list.
Upshaw, a second-round pick, is expected to take the place of Jarret Johnson in the starting lineup.
Outside linebacker Terrell Suggs, who injured his Achilles tendon this offseason, was also placed on the non-football injury list.
The Ravens placed four players on the Physically Unable to Perform list to start camp: guard/tackle Kalechi Osemele (leg), offensive tackle Jah Reid (calf), defensive end Pernell McPhee (knee) and wide receiver/returner David Reed (knee). Players can be removed from the PUP at any point in camp. If a player remains on the list at the start of the regular season, he will miss at least the first six weeks of the season.