Northampton's Alex Waller simultaneously tackled by Saracens' Billy Vunipola and brother Mako Vunipola (R) - Rugby Union - Avive Premiership - Northampton Saints v Saracens - 07/11/15 - Round 4 - Northampton Saints v Saracens - Round - At Franklin's Gardens, Northampton UK. Photo Credit - Tom Dwyer/Seconds Left Images