The duo have both made their AFL debuts for the club, with Jeka taken at Pick 9 in the 2019 draft, and Brockman at Pick 46 in the 2020 draft.
Jeka, who made his debut in Round 7 of the 2021 season against St Kilda, has managed to progress out of the Box Hill VFL system this season.
A positional change from the forward line to the back line saw Jeka ultimately play the final three games of the 2022 season, taking his career tally to seven AFL games.
The 20-year-old, who stands at almost two metres tall, has made an impression on the club during the second half of the AFL season.
"Jeks has made a really strong impression in his second season, after making the switch from the forward line to the back line midway through this year,” Hawthorn national recruitment and list manager Mark McKenzie said in a statement.
"He has shown some great improvement in his game over the past 12 months and has started to find his feet down back."
Brockman, on the other hand, has faced the dreaded injury curse this year after suffering a shoulder problem playing in the VFL for Box Hill.
He played 11 AFL games in 2021 for the Hawks however, averaging almost a goal per game and putting on some outstanding performances despite being taken at pick 46 in the draft.
"After showing plenty of promise in his debut year, Brocky was really unlucky to have his 2022 campaign cut short due to injury," McKenzie said.
"He brings plenty of excitement with his attacking play and sharp skills, so we’re looking forward to having Brocky return to the track in 2023.