OXNARD, Calif -- Defensive end?DeMarcus Lawrence?publicly apologized to the Cowboys organization Sunday for violating the NFLs substance-abuse policy, which has earned him a four-game suspension.?In his first public comments since his suspension was announced in April, Lawrence said he apologized to his teammates during OTA practices before publicly apologizing to his coaches and the Jones family. He also vowed to learn from his mistake and promised to live up to the potential he showed at the end of last season, when he registered eight sacks in the last nine games.I aint gonna lie, Lawrence said after Sunday mornings practice. I did feel guilty, but God puts you through things for a reason. I just see it as a blessing to open my eyes with a little fortitude.I got a chip on my shoulder. You have to play like that when you know you let the team down for the first four games.The suspension will cost Lawrence $230,151. The 34th pick in the 2014 draft is scheduled to earn $1.17 next season, the final year of his rookie contract. Lawrence had 55 tackles, including 10 for loss, and a forced fumble last season.?We all make mistakes. Hes made a mistake, coach Jason Garrett said. The biggest thing you want everyone to do is accept responsibility for it and be accountable for it and then do what you need to do to rectify it.It was important for him to acknowledge that. Hes a good person. Hes a good teammate. He works hard and he wants to be the best he can, and he wants this team to be the best it can be.Lawrence said he felt obligated to apologize to his teammates because he has emerged as a leader entering his third season.Times like this -- hard times -- come through your life all the time, Lawrence said. 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 a leader and I didnt prove myself to them. I had to step up and let them know I was sorry.Lawrence will practice during training camp, and he will continue working to make sure his back can withstand the rigors of an NFL season. He had offseason back surgery, which caused him to show up for training camp a few pounds over his desired weight.Hes a stand-up guy who takes responsibility for his mistakes. obviously. Its an unfortunate one for us, but hes moving on from it, safety Byron Jones said. Its not bothering him right now; maybe it is, but hes practicing hard and hes in meetings taking notes. Hes not looking at it like hes not playing the first four games. Aaron Ekblad Jersey . During the athletes parade, the 23-strong Ukrainian team was represented by a lone flagbearer in an apparent protest at the presence of Russian troops in Ukraines Crimean peninsula. Evgenii Dadonov Jersey . The Olympic champion curler and TSN curling analyst immediately went online to look at the Halls long list of honoured members. Thats when the enormity of the honour sunk in. http://www.hockeypanthersofficialonline.com/denis-malgin-hockey-jersey/ . But what about the officials? Every sport has officials and they also have stories about hard work and sacrifice but their accomplishments are seldom recognized by anyone outside their inner circle. Jonathan Huberdeau Panthers Jersey . The Nashville Predators were glad their captain was still on their side. Weber had a goal and two assists, and Roman Josi scored the shootout winner to lift the Predators to a 4-3 win over the Flyers on Thursday night. Denis Malgin Jersey . It just didnt show when he hit the ice. Berra made 42 saves and Kris Russell scored at 1:32 of overtime, lifting the Calgary Flames to a 3-2 victory over the Chicago Blackhawks on Sunday night.Louis van Gaal is thankful for Sir Alex Fergusons support but remains well aware that failing to finish the season with a flourish will put his Manchester United future in jeopardy. This has been yet another frustrating campaign for the 20-time league champions, with inconsistent displays meaning Champions League qualification and FA Cup success is the best they can hope for.It is a far cry from the successes enjoyed during Fergusons tenure, but the former United boss this week defended the Dutchman and urged fans to be patient. Van Gaal was thankful for that support, along with remarkable backing from the likes of Sir Bobby Charlton, executive vice-chairman Ed Woodward, managing director Richard Arnold and director David Gill.He knows that support can only go so far, though, and is aware his position will come under further scrutiny if they fail to finish in the top four.I cannot say [I will be here if we fail to make the top four] because I think the board has to evaluate after the results of this year what they have to do, the United boss said.I think that is normal and I cannot predict that when I do not know the facts.First you have to see the facts, I have always said that. The results and also the titles or the Champions League positions, you can only say at the May 15 yes, it is like that or like that. Louis van Gaal has set his sights on a top three Premier League finish Then you have to evaluate the circumstances how I had to work in the season. An example of that is in the [Sky Sports] interview of Sir Alex.I am a rational person. I know that a manager of Manchester United has to win something, but I am still working on that.Van Gaal says every match counts now for United, who welcome Everton to Old Trafford in a Super Sunday clash buoyed by their victory at rivals Manchester City before the international break. There was late drama when Man Utd played Everton in 2012 United are sixth in the standings, just a point off fourth-placed City, and with an FA Cup quarter-final replay at West Ham to come on April 13.ddddddddddddAsked if he would be surprised to lose his job if United fail to make the top four, Van Gaal added: I cannot say that because I do not know the next eight matches. Jamie Redknapp gives his thoughts ahead of Super Sunday You can only evaluate when you have the total facts and now I cannot say that and my board cannot say that either because we have to play matches still.Also we have to play against West Ham United, then Everton and then the final.Van Gaal also responded to comments by former player Angel Di Maria that he was unable to settle at Old Trafford due to being played out of position. Van Gaal was not impressed with comments made by Angel Di Maria I have never seen [many] players who looks at himself, who looks to the way they have performed here and that is always the fault of the manager, said Van Gaal.So he is one of the players who are in the row of players who have no self-criticism and, unfortunately, it is also my life as a manager. It is always like that.Watch Manchester United v Everton on Super Sunday. Coverage begins on Sky Sports 1 HD at 3:30pm, after Leicester v Southampton. Also See: Sir Alex: Thoughts on a Remarkable Season LVG targets top-three finish Sky Live: Man Utd v Everton Manchester United fixtures ' ' '