Alex Mitchell has scored 10 tries so far for Northampton Saints this season Gallagher Premiership Harlequins (6) 19 Tries: Clifford Cons: Smith Pens: Smith 4 Northampton (13) 20 Tries: Tuala, Mitchell Cons: Biggar, Grayson Pens: Biggar 2 Alex Mitchell ran in a dramatic late try to help Northampton Saints to a narrow victory against Harlequins…