Last season, the Pittsburgh Steelers won their final four regular season games to win the AFC North and reach the playoffs, where they were defeated 30-17 by the Baltimore Ravens. They were solid in most areas, but the one area of concern is and was their pass defense, which was ranked in the bottom five.

The Steelers' 2015 opponents were a combined 147-107-2, which gives them one the toughest strength of schedules going into the season.

Home: Baltimore Ravens, Cincinnati Bengals, Cleveland Browns, Denver Broncos, Oakland Raiders, Indianapolis Colts, Arizona Cardinals, San Francisco 49ers

Away: Baltimore Ravens, Cincinnati Bengals, Cleveland Browns, Kansas City Chiefs, San Diego Chargers, New England Patriots, St. Louis Rams, Seattle Seahawks

Here are three of the matchups to keep an eye on:

Baltimore Ravens: The Ravens-Steelers games are usually some of the most watched games of the season because they are usually close and very hard to predict. It is even more intriguing this season since they are two of the better teams in the AFC and the Steelers will be looking for revenge for their Wild Card loss last year.

Cincinnati Bengals: The Steelers may have swept their series against the Bengals last season, but Cincinnati has a young, up-and-coming team, so both of their games against each other should be interesting. Pittsburgh has dominated the series in recent years, winning eight of the last 10 games.

New England Patriots: Beating the defending Super Bowl champs would certainly help the Steelers get back to the playoffs, and they have done pretty well against the Patriots in recent years. If Pittsburgh is good enough to beat New England on the road, they should be expected to beat some of the other tough matchups on their schedule this year.

Read more articles by Josh Schonwald