Lewis Gregory struck 10 fours and five sixes in his unbeaten innings of 129 Specsavers County Championship Division One, Cooper Associates County Ground (day three) Surrey 380 & 152-5: Burns 78; Leach 2-44, Gregory 2-46 Somerset 398: Gregory 129*, Hildreth 90, Azhar 60; Clarke 3-74 Surrey (7 pts) lead Somerset (6 pts) by 134 runs…