Adelaide have re-signed four youngsters including regular senior players Riley Knight and Jake Kelly.
Former first-class cricketer Alex Keath, who has played the last four games, and the untried Tom Doedee have also earned new deals.
All four players will remain with the Crows for an extra two years, taking them through until the end of 2019 at least.
Adelaide list manager Justin Reid said all four players were an important part of the club’s future.
“It’s a great reward for Riley, Jake, Alex and Tom,” Reid said.
“All four are very team-orientated players, who are willing to do whatever it takes to help the club succeed and we look forward to seeing them continue to grow.
“We have developed a learning environment at Adelaide where we want to give players every chance of getting the best out of themselves.”