Talented teenager Dominic Sibley has signed a new deal with Surrey.
The 18-year-old became the youngest batsman to score a double century in the County Championship, and Surrey's youngest ever centurion, in only his third first-class match towards the end of the 2013 season against Yorkshire.
Sibley joined fellow teenager Tom Curran in signing a new contract with Surrey until 2016.
Curran featured in five matches for Surrey last season in the Yorkshire Bank 40, taking 5-34 against Scotland in August .
The duo, who are due to take their A-Level exams next summer, will join the Surrey squad full time once they have completed their education.
Surrey director of cricket Alec Stewart said: "These are two highly promising young cricketers and we look forward to seeing them develop over the next few seasons."