Lawrence is one of three Cowboys defensive players who received suspensions this offseason, along with Randy Gregory and Rolando McClain.
"Times like this - hard times - come through your life all the time," Lawrence said after practice Sunday, according to ESPN's Jean-Jacques Taylor. "You have to stand up and be a man about your mistakes. I did that. I stood up as a man, talked to my teammates and they understand how sorry I am.
"You have to admit to your decisions and mistakes. I felt like that was the right thing to do. My team counts on me as leader and I didn't prove myself to them. I had to step up and let them know I was sorry."
Lawrence emerged as a force in his second year, recording 55 tackles and eight sacks in 16 games. The 24-year-old is expected to be a necessary component to the Cowboys' pass rush upon returning from suspension. With the Cowboys' pass-rush already paper-thin, the team is now hoping he will enter the season with a chip on his shoulder.
Although he'll be out for the first quarter of the season, at least one of Lawrence's teammates accepts his apology.
"He's a stand-up guy who takes responsibility for his mistakes. Obviously, it's an unfortunate one for us but he's moving on from it," Cowboys safety Byron Jones said. "It's not bothering him right now - maybe it is, but he's practicing hard and he's in meetings taking notes. He's not looking at it like he's not playing the first four games."
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