Representatives for Mark Ingram say the Saints running back did not test positive for a performance enhancing drug and is weighing options for challenging his four-game suspension.

Paul Bobbitt and David Jones of VIP Sports Management say Ingram was using a substance that is permitted by the NFL with a ”proper use exemption.”

Ingram’s agents did not specify which substance Ingram used.

The NFL’s drug policy does not merely ban performance enhancing drugs Lamar Miller Jersey , but also certain legal substances which have been known to skew drug test results.

The NFL announced Ingram’s suspension on Tuesday.

Bobbitt and Jones say Ingram has challenged the NFL’s decision through arbitration, and that his legal team will consider further options after reviewing the arbitrator’s recent ruling.

Last season, Ingram rushed for a career-high 1 Julius Peppers Jersey ,124 yards and 12 touchdowns to go with 416 yards receiving.

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The Dallas Cowboys placed the franchise tag on DeMarcus Lawrence on Monday, and the Pro Bowl defensive end quickly signed the one-year contract that guarantees him $17.1 million in 2018.

The Cowboys had until Tuesday to put the tag on Lawrence, who can still sign a long-term deal with the club that traded up him to get him early in the second round in 2014. Lawrence's agent Matt Prater Jersey , David Canter, wrote on Twitter that his client signed the deal.

Lawrence tied All-Pro Calais Campbell of Jacksonville for second in the NFL with 14陆 sacks last season. The 25-year-old's breakout year came after he struggled with injuries most of his first three seasons. He had back surgery each of the previous two offseasons.

On the one-year contract, Lawrence's salary would be the average of the NFL's five highest-paid defensive ends.

Lawrence is an important piece with the Cowboys trying to get back to the playoffs after missing at 9-7 a year after they had an NFC-best 13 wins before losing a divisional playoff to Green Bay.

The former Boise State player emerged for a Dallas defense that has lacked star power beyond 2016 All-Pro linebacker Sean Lee. Lawrence surpassed his previous career high of eight sacks in the fifth game.

Pass rushing was a problem for the Cowboys in each of their past two trips to the playoffs. In 2014 Jarius Wright Jersey , they finished 28th in sacks and couldn't get to a hobbled Aaron Rodgers in a divisional loss to the Packers after Lawrence clinched a wild-card win over Detroit with a sack of Matthew Stafford.

In the rematch with Rodgers, Dallas sacked him three times but couldn't get a stop in the final minutes of a 34-31 loss in January 2017.

Lawrence broke a foot in training camp his rookie year, missing half the season. His second year was Lawrence's only full season Andrew Norwell Jersey , when he had 31 QB pressures to go with the eight sacks.

After serving a four-game drug suspension to start 2016, he had three sacks in nine games before missing the final three regular-season games with a back injury. He played in the divisional loss to the Packers.

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