PITTSFORD, N.Y. -- Bills general manager Doug Whaleys patience is growing thin after starting defensive tackle Marcell Dareus experienced his latest off-season setback by failing a pre-training camp conditioning test. "Its cause for concern," Whaley told The Associated Press after the Bills held their first practice -- minus Dareus -- in suburban Rochester on Sunday night. "You always are disappointed when one of your guys isnt ready. But we think hes not far off. So hopefully sooner than later." Whaley then expressed confidence in Dareus, whose string of troubles include drug possession and reckless driving charges in two separate arrests in May. "His mindsets better once hes here," Whaley said, referring to the practice field. "And I think well find out with his actions. And I think hes ready to disprove all this stuff that hes a bad seed." The Bills placed Dareus on the active/non-football injury list on Saturday because the 2011 first-round draft pick did not report to camp in shape, coach Doug Marrone announced shortly before the start of practice Sunday. Marrone declined to say whether he was disappointed in Dareus latest setback. "I just think right now he just needs to focus on getting himself ready, getting on the field, and focusing on football," Marrone said. "And I think thats what hell be ready to do." Dareus was not present for practice and has not been spotted at the teams training camp facility since players began reporting on Friday. Under the observation of trainers, he must now work himself back into shape, and then pass the tests to be cleared for practice. This isnt a good start for a player who has encountered a series of on- and off-field problems over the past seven months. In early May, Dareus was arrested in his native Alabama and charged with possession of synthetic marijuana and drug paraphernalia. Four weeks later, he was allegedly racing teammate Jerry Hughes when he crashed his 2012 Jaguar into a tree near a busy intersection not far from Ralph Wilson Stadium. Dareus was charged with reckless endangerment and ticketed for several traffic violations, including drag racing. The NFL could potentially discipline Dareus for his off-field troubles with a fine or suspension. After the crash, Dareus consulted with Marrone and decided to take two weeks off from voluntary practices. He returned for the teams three-day mandatory minicamp in mid-June, but did not speak to reporters. Dareus troubles date to the end of last season when he was benched for parts of the final two games for breaking team rules. Marrone had previously taken responsibility for mentoring Dareus. "I just want to make sure that Im clear that everyone understands that I believe in Marcell, and I will do everything I can to make sure that we can get him on the right track," Marrone said in June. "Im going to do everything I can to help a 24-year-old man make better decisions." And yet, its unclear whether the player is listening. Even Dareus teammates have publicly expressed concerns over his poor decision-making. Veteran defensive tackle Kyle Williams, last month, said he hoped the car crash was a wake-up call for Dareus. "Hopefully, its to a point where its kind of an epiphany, and he comes alive and turns the corner and does his best," Williams said then. NOTES: LT Cordy Glenn, who is on the active/non-football illness list, watched from the sideline. DT Alan Branch, also on the illness list, did conditioning drills on the sideline. ... LT Seantrel Henderson did not return after being escorted to the locker room an hour into practice. WR Marquise Goodwin also did not return after being escorted off. The Bills had no updates on the players status. Yogi Berra Jersey . Starters, when they struggle, have to live with it for five days. For Sergio Santos and Steve Delabar, two of the three men who authored one of the ugliest pitched innings in Blue Jays franchise history on Thursday night, the bounce-back chance came right away. Gary Sanchez Yankees Jersey . John Albert Elway, 24, was booked into jail early Saturday morning after an incident near a college campus in downtown Denver, according to jail records. https://www.cheapyankees.com/2711g-mike-mussina-jersey-yankees.html .500 ball against teams with winning records, so they needed a huge lift from somebody Tuesday night in a matchup of division leaders. Greg Bird Jersey . Lupul injured the hand in a fall at practice on Thursday. He will wear a cast for a minimum of 10 days before he can put a glove back on it and get some mobility back, said Carlyle, who added the winger wont go on the teams upcoming road trip. Joe Pepitone Jersey . - Tom Brady was upset that his New England Patriots hardly looked like a division champion in the first half. 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