County Championship: Durham's Emilio Gay and Surrey's Dom Sibley strengthen England call-up prospects with centuries

Durham's Emilio Gay scored his third century in four County Championship games, this time against Middlesex, boosting his prospects of an England call-up. Surrey's Dom Sibley hit an impressive 187 against Sussex, further strengthening his own international ambitions. Meanwhile, Joe Root's half-century kept Yorkshire's hopes alive, and Northamptonshire claimed their first win of the season.