I did not know much about him so I played google investigator
Jacobs, who has been part of the side's wider training group, joins the squad on a short-term contract as cover for the injured Winston Stanley and Will Tupou
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Full name Ben Jacobs
Date of birth 17 May 1982 (age 30)
Place of birth Sydney, New South Wales, Australia
Height 185 cm (6 ft 1 in)
Weight 98 kg (15 st 6 lb) [1]
School Woolooware High School
Jacobs made 35 appearances for the Waratahs between 2004 and 2008, and has since represented Premiership clubs Saracens (2008-2009) and Wasps (2009-2011), and Japanese club, Kyuden Voltex (2011-2013).
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http://www.youtube.com/watch?v=LkSrG5S5KfE