After a season of bad breaks (and often bad play) and a spring under national scrutiny, Northwestern hoped its toughest days were in the past.

Venric Mark's sudden transfer is a tough blow for the Northwestern offense. David Banks/Getty Images

But Wednesday proved to be a very tough day for the program, as standout running back Venric Mark announced he will transfer to play closer to his home in Houston. If that stunner wasn't enough, Northwestern also lost veteran wide receiver Christian Jones to a season-ending knee injury sustained in practice.

Mark's transfer leaves more questions than answers at this point. The team announced last week that he would be suspended for the first two games this fall for violating an unspecified team policy. Mark learned of the suspension in June and appealed it, and while he called it "shocking" while speaking with reporters Tuesday, he also accepted it.

"Does it hurt? Yeah, it hurts really bad," Mark said Tuesday after practice. "But there's no point in pouting. I'm going to embrace it."

New developments that surfaced after Mark's media appearance and before Wednesday night's announcement contributed to Mark's ultimate decision, ESPN.com has learned. Whether those developments were additional violations/discipline from the school or something unrelated -- like a family issue -- aren't known at this point.

"Northwestern has been an indescribable experience for me," Mark said in a prepared statement. "It has been my home for four years, and has molded me into the man I am. I’m one class shy of the Northwestern degree I’ve worked so hard for, and I will graduate. I’m devastated to leave my second home, but life is full of challenges and I’ve been presented with another one. Right now this is what is best for me and my family."

Coach Pat Fitzgerald added that Northwestern will miss Mark but that this is "unquestionably what is best for Venric and those closest to him."

It will be interesting to see whether Mark ends up at an FCS school or petitions to play immediately at an FBS program like Houston or Rice.

Mark earned All-America honors as a punt returner and second-team All-Big Ten honors as a running back during a breakout 2012 season, where he rushed for 1,366 yards and 12 touchdowns and had two punt-return scores. He missed most of last season with leg injuries but was granted an extra year.

This is a significant loss for Northwestern because of Mark's speed and playmaking ability. But the Wildcats have good depth at running back with Treyvon Green, Stephen Buckley and Warren Long, and brought in several talented freshman recruits, including Justin Jackson.

The depth at wide receiver also is good with Tony Jones, Cameron Dickerson, Kyle Prater, Rutgers transfer Miles Shuler, and others. Northwestern figures to be more of a pass-oriented offense with Trevor Siemian as the sole quarterback.

The shock value here is certainly significant, perhaps more so than the actual losses. But Northwestern's offense could use all the weapons it can get after a subpar 2013 season.

Check back for more developments.