Tight end Rob Gronkowski is officially out for Monday’s game against the Texans, which was expected, and 13 Patriots are listed as questionable. Among those, right guard Dan Connolly, defensive end Chandler Jones, left guard Logan Mankins and right tackle Sebastian Vollmer are the key players to watch in terms of their status. Listed as questionable: Defensive tackle Ron Brace (elbow), safety Patrick Chung (shoulder, hamstring), offensive lineman Dan Connolly (back), tight end Aaron Hernandez (ankle), linebacker Dont’a Hightower (hamstring), defensive end Chandler Jones (ankle), wide receiver Brandon Lloyd (knee), defensive tackle Kyle Love (knee), left guard Logan Mankins (ankle, calf), offensive lineman Nick McDonald (shoulder), linebacker Brandon Spikes (knee, ankle), right tackle Sebastian Vollmer (back, knee) and wide receiver Wes Welker (ankle) Linebacker Jerod Mayo (elbow) is listed as probable. Source: Boston Herald