OXNARD, Calif. -- Dallas defensive end DeMarcus Lawrence faced his teammates in the spring, apologizing for a violation of the NFL substance-abuse policy that will sideline him for the first four games this season.The next step was addressing the suspension publicly, which the third-year player did on the second day of training camp Sunday with the Cowboys.My disappointment is its on me, Lawrence said. I messed up. I learn from my mistakes and I just have to move on and get everything right.Lawrences ban was one of three in the offseason for the Dallas defense under the substance-abuse policy. Fellow pass rusher Randy Gregory will miss at least four games and faces a longer suspension over another failed drug test. Linebacker Rolando McClain already has a 10-game suspension.The 24-year-old Lawrence is the only one of the three to report for camp.Gregory is in rehab, raising doubts about whether he will play at all a year after sliding to the Cowboys late in the second round of the draft when he failed a marijuana test at the NFL combine. McClain didnt report after staying away from the team most of the offseason.Both are on the reserved-did not report list, subjecting each to $40,000 daily fines and leaving Lawrence to answer for suspensions that snared three starters.I cant speak for nobody else. I just know my situation, said Lawrence, who led the Cowboys with eight sacks last season. I just made a mistake. Everybody makes mistakes. But its what you do from it.Lawrence is also coming off back surgery in the offseason and is unlikely to go full speed in camp with the suspension looming as well. Hes eligible for preseason games, so the coaching and medical staffs will have to decide how far to go to get him ready for Oct. 9 against Cincinnati.You have to get them ready, coach Jason Garrett said. Hes going to get plenty of work. I do think we can achieve both things, where he still gets his work and lays a foundation for the season, and you still get the other guys an opportunity.Lawrence missed the first half of his rookie season when he broke his foot early in training camp two years ago. He started to show up late that season, getting one sack in the regular season and another in the playoffs. He started slowly last season before getting seven sacks in the final eight games.Now hell have another slow start because he wont be out there until Week 5.Im going to deal with it by trying to help my young guys and making sure theyre ready, Lawrence said. Im just going to work as hard as I can off the field, you know? Just by doing film studies and giving them little keys or whatever they need. Im here for the team.Garrett said Lawrence delivered that message in the spring.Hes a good person, Garrett said. Hes a good teammate. He works hard. He wants to be the best he can be and he wants his team to be the best it can be. I think hes acted accordingly since then.Game notes QB Tony Romo skipped the second camp workout Sunday in order to be available for the first two padded practices Monday and Tuesday. The routine will be similar to 2014, when he was coming off back surgery and had roughly a day off for every two workouts. ... Garrett said several other veterans will get periodic days off, including Dez Bryant. The 2014 All-Pro receiver is coming off two surgeries after breaking his right foot in the opener last year.---Online:AP NFL websites: http://pro32.ap.org and http://twitter.com/AP-NFL---Follow Schuyler Dixon on Twitter at https://twitter.com/apschuyler Wholesale Jordans Online . 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WASHINGTON -- The Washington Nationals recalled pitcher Reynaldo Lopez to make his major league debut Tuesday night against the Los Angeles Dodgers.The team selected the right-handers contract from Triple-A Syracuse and placed left-handed reliever Sammy Solis on the disabled list with right knee inflammation.Lopez, who is the fifth-ranked prospect in the Nationals organization and 92nd-ranked in baseball, had a 3.27 ERA in four starts for Syracuse after striking out 100 batters in 14 starts for Double-A Harrisburg. Right-hander Joe Ross remains on the DL with shoulder inflammation.At this point in the season, since Joe has been down and we have that rotation slot open, we kind of wanted to see what we got, Nationals general manager Mike Rizzo said of Lopez. Hes come a long way in a short period of time, and we thought we could not only reward him for what hes done, he gives us a chance to win the game tonight.Wasshington recalled Lopez over right-hander Lucas Giolito, the organizations top prospect.dddddddddddd Giolito posted a 4.70 ERA in two recent starts without a decision before the Nationals optioned him to Triple-A Syracuse on July 8.If Giolito had pitched a little bit better, this might not have happened, manager Dusty Baker said. But the fact that Giolito was having trouble with his secondary pitches -- and in the big leagues, if youre having trouble with your secondary pitches, theyll just sit on that and just sit on your fastball.The Nationals on Tuesday also lost right-handed pitcher Abel de Los Santos, claimed on outright waivers by the Cincinnati Reds. De Los Santos appeared in two major league games for Washington last season, allowing one earned run on two hits in 1 2/3 innings. ' ' '