Rogers made an impressive first-team debut against Oxfordshire in the National Counties friendly and played for England Under-19s last summer. Lion-Cachet, meanwhile, made his Sussex senior bow in the Metro Bank One-Day Cup
Henry Rogers and Zach Lion-Cachet have signed rookie contracts with Sussex.
Allrounder Rogers made an impressive first-team debut against Oxfordshire in the National Counties friendly in July, scoring 73 from 75 balls.
The 17-year-old was called up to the England Under-19s squad in August, hitting 56 off 53 balls and taking 4 for 25 against Ireland at Loughborough, before playing three Youth ODIs against Australia.
His strong summer continued by hitting 140 Sussex second XI, where he crafted a brilliant innings of 140 against Glamorgan at Woodman Cote in September.
Right-handed batter Lion-Cachet is a product of the relationship between Sussex and Oxfordshire.
The 19-year-old became the first player to score a century in all formats for Oxfordshire this summer, shortly after making his debut for Sussex's first team against Worcestershire in the Metro Bank One Day Cup in August.
Paul Farbrace is expecting big things of the teenage pair going forward (Gareth Copley/Getty Images)
In between that outing at New Road, he reeled off centuries in successive appearances for Sussex seconds, registering 102 not out against Somerset at Taunton, and 111 against Northamptonshire at Peterborough.
Head coach Paul Farbrace said: "Zach is a talented young batter, who has shown real determination to learn and improve.
"He is an exciting project that we all want to help develop.
"Henry showed real maturity on his debut last season at Oxfordshire and looks an excellent striker and timer of a ball.
"It's great that he has also spent time with the Young Lions this summer. We are all looking forward to helping and watching Henry continue to develop his all-round game."