Nottinghamshire all-rounder Luke Wood has agreed a contract extension to run until the end of the 2018 season.
Wood, 20, took 30 wickets and made 420 runs, including a maiden century, in Championship Division One this summer.
"Bowling remains his number one role and the way he performed this season was very encouraging," said director of cricket Mick Newell.
Spinner Matthew Carter, 19, has signed a two-year deal after match figures of 10-195 against Somerset in June.
It remains the only first-team appearance to date for the teenager, who previously played Minor Counties cricket for Lincolnshire.
"He has the potential to be a very special bowler for Nottinghamshire," Newell commented.
Meanwhile, left-hander Wood will travel to South Africa with the England Performance Programme squad this winter.