The Patriots unloaded a pair of players yesterday who arrived at training camp with a chance to make the 53-man roster. Offensive lineman Nick McDonald who failed his physical and wide receiver Lavelle Hawkins were released. A third player undrafted rookie receiver Perez Ashford who was a longshot and didn’t stand out in his 12-day stint with the Pats was also waived. McDonald had been a serviceable lineman for the Patriots since 2011 and his versatility was his most valuable asset. Though McDonald was an interior lineman by trade he practiced enough at tackle to provide emergency relief on the outside. But he struggled to stay healthy in his two-year run and he went down during offseason workouts and hadn’t returned to the field. When camp opened he was on the physically unable to perform list then spent the latter portions of practice time working on his conditioning in the end zones. It’s possible McDonald could return to the team once he is healthy enough to practice. The Patriots also signed his brother Chris who is also an offensive lineman as an undrafted free agent before rookie camp.