SportMathematical geniusJim Hooley|Daily Mail13 April 2012Daily Mail Under 18 CupReigate Grammar led at half time but slipped to a surprise defeat in thesecond round when they were beaten 20-15 at Rochester by Sir JosephWilliamson's Mathematical School.Sir Joseph's hard-working pack laid thefoundations and a Jack Frame penalty plus an incisive break from fly halfGreg Curtis, which took him under the posts, cancelled out Reigate's earlyconverted try.A controversial try in the corner gave Reigate their 15-10half time advantage but Sir Joseph's pack got on top again and scored inthe corner through full back Simon Green after a set-piece move starting onhalf way.Frame's second penalty ended a good day for the home side butthey will have to raise their game to another level in the third roundagainst Whitgift, who had a convincing 53-0 win at Langley Park.Whitgiftcan call upon many of the players who won the Under 15 Cup in 1999 andtheir pack established a solid platform for fly half Nathan Lamb to run theeight-try show.Gravesend Grammar's fifth year back row won them the gameat St Olave's who led 7-0 at half time courtesy of an excellent convertedtry from centre James Greenidge.But Gravesend were quicker to thebreakdown in the second half and came through 17-13 with the home sidemissing four kickable penalties.Read MoreNo action against Reform councillor over threat to punch colleague ‘in the jaw’Postecoglou given Arsenal job months after Tottenham exitTransfer news LIVE! Arsenal deal close; Chelsea to announce signingSponsoredWinter escapes and activities to end the year in style Gravesend now travel to Egham to faceStrode's whose backs were clinical in the 48-0 defeat of Brooklands inwhich there were two tries apiece from Jay Matthews, Adam Lantepidi and EdCharbery.MORE ABOUTGrammarGravesend (kent)Kent CountyMathematics