Belichick’s no-tolerance policy with players being on time is well documented; most recently with Revis and running back Jonas Gray being sent home from the team facility during the 2014 regular season for arriving late.
Over his 16 years as coach, it’s one of the primary messages he stresses with players, noting that unpredictable weather is part of living in New England and to always plan accordingly with a larger margin for error.
However, this is believed to be the first time Belichick has sidelined a player for multiple weeks in a voluntary setting.