After four games, the identity of this Tulane Green Wave football team is becoming clear. 

Expectations have been lowered, and there are obvious issues on both sides of the ball. The Green Wave is 2-2 on the season, and while some might note that both losses came to Power Four opponents, it's just as important to acknowledge that the wins were come-from-behind victories in games that Tulane was favored in. 

It's easy to point out what's going wrong with the program, but it's a little harder to gauge exactly how bad it is compared to the other 137 FBS teams across the nation. Here's a look at where the Olive Green and Sky Blue stands in some of the biggest metrics.

It seems like this should be a little higher given how strong Tulane's running backs room is, but the Green Wave is actually averaging 160.5 rushing yards per game and has totaled just six scores on the ground. 

The rushing offense has been feast or famine. Maurice Turner and Jaylin Lucas have each had individual performances of 200-plus rushing yards, but those are sandwiched between some all-around underwhelming performances. It doesn't help that the program's offensive line has been pushed around pretty easily.

Tulane's next opponent, the Army Black Knights, leads the nation with an average of 355.7 rushing yards per game. Meanwhile, the Northern Illinois Huskies are in last place with 79.2 yards per game. 

This isn't much of a surprise.

The Green Wave has now used three different quarterbacks this season. Zeon Chriss-Gremillion started the first game of the year against the Duke Blue Devils, but he's been sidelined since. Kadin Semonza earned the starting nod in each of the program's last three games, but Tulane ultimately turned to freshman Trace Johnson in the final quarter of the team's Week Four matchup with the Southern Miss Golden Eagles. So far, none have been the spark that the team has needed. On the other end, the wideouts haven't had as much of an impact as one would hope, with drops hurting the team heavily. All in all, the program is averaging just 186.2 passing yards per contest and has only three passing touchdowns on the year. 

In comparison, the SMU Mustangs are the nation's top passing offense, with 392.5 yards per game. The Central Michigan Chippewas are the only ones without a touchdown through the air this year, and they're averaging 68.8 passing yards per game. 

Yuck. 

Turns out, Tulane's rushing defense is just as bad as advertised. The Green Wave has given up 191 yards per game and seven total touchdowns. It doesn't help that the team faced Duke RB Nate Sheppard to open up the season, but things haven't improved much at all since then. The lack of efficient tackling, gaping holes on the d-line, inability to get into the backfield... those have all been a massive problems. 

It could be worse: the Bowling Green Falcons are giving up an FBS-worst 262.2 rushing yards per game. On the other hand, the Miami Hurricanes have allowed just 39.5 rushing yards per matchup. 

While still far below average, the Green Wave's passing defense is notably better than its rushing defense... so there's that. 

The team is giving up an average of 231 yards per game through the air and an average of 12.32 yards per completion. Opponents are pretty easily picking the secondary apart downfield and relying heavily on miscues and busted coverage. So far this year, Tulane has had no interceptions and has rarely gotten a hand on the ball defensively. Unfortunately, quarterback play is only going to get better from here. 

The Kansas State Wildcats, who the Green Wave faced in Week Three, lead the nation with just 106.2 passing yards allowed per game. The Texas State Bobcats bring up the rear with 348.2 passing yards allowed.