The 2015 season was the Baltimore Ravens' 20th in the National Football League (NFL) and their eighth under head coach John Harbaugh.

Although picked by some, including Sports Illustrated's Peter King, to reach the Super Bowl, they had a disappointing season due to devastating injuries to team starters.

14 of their games were decided by 8 points or less and Joe Flacco, Justin Forsett, Steve Smith, Sr., and Terrell Suggs all suffered season ending injuries.

With their fourth straight loss to the Bengals, the Ravens dropped to 0–3 and started the season with such a record for the first time in franchise history.

The Ravens couldn't use the momentum from the Pittsburgh win to beat their division rival the Browns, losing in overtime 33–30, dropping to 1–4 for the first time in franchise history.

In a rematch of Super Bowl XLVII, the Ravens' defense was unable to keep up with San Francisco quarterback Colin Kaepernick and their former teammates Anquan Boldin and Torrey Smith.

Late in the fourth quarter, Joe Flacco attempted to mount a comeback, but an interception in the end zone by the Cardinals sealed the loss.

The Ravens were finally able to win a back and forth game, despite a poor showing from the defense, on a game-winning field goal from Justin Tucker.

Already missing Terrell Suggs for the season, the Ravens suffered another setback and this time Steve Smith, Sr. left the game with a ruptured Achilles tendon.

It was later revealed that in fact, the Jaguars had not set before the aforementioned play, in which case they would have been penalized for a false start, and the ensuing ten-second runoff would have ended the game with the Ravens winning 20–19.

In another wild game, the Ravens' second string offense, forced into starting roles due to mounting injuries, managed a win against the Browns, avoiding a season sweep which hasn't happened since 2007.

The game was won on the last play of regulation, when defensive end Brent Urban blocked a Travis Coons 51-yard field goal attempt, which safety Will Hill returned 64 yards for a touchdown.

In another disappointing loss, the Ravens’ offense failed to capitalize on a fantastic defensive performance, with Schaub throwing another pick six along with another interception which also led to Miami's other touchdown.

Entering a game in which they were forced to start third-string quarterback Jimmy Clausen, the Ravens were outmaneuvered at every turn against a superior Seahawks team.