Sunderland lost 4-2 at Southampton on Saturday, with the spotlight being shone on the playing squad once again. Sunderland fielded the youngest ever starting XI that the Championship has ever seen against Southampton, with an average age of just 20.8 years. The 16-year-old Chris Rigg started but was branded ‘incredibly naive’ after giving away a penalty, whilst 18-year-old Jobe Bellingham also started and showed some dodgy defending for the opening goal. Although Bellingham scored a stunning goal in the second half to draw Sunderland level, Southampton easily got back in front, with Joe Rothwe…