Sandygan Yona John Adrian Korab is a professional Filipino Dota 2 player, playing in the mid-lane position.

Yona's esports career began in the summer of 2021 when he joined the team InterActive Philippines. Under this tag, he earned his first prize money, taking third place in the FDS Esports Invitational Season 2. At the beginning of 2022, the team entered the top 8 in the Continent Peace Season 1 and Asia New Star Cup Season 3, after which Sandygan moved to Atomic Esports. With this team, he took fourth place in the Titus Colosseum Cup Season 1 and became the bronze medalist in the Titus Colosseum Cup Season 2 and Asia Pacific Predator League 2022.

In July 2023, Yona rejoined InterActive Philippines. After his return, the team placed in the top 6 in the Master Cup SEA 2023. In December, Sandygan moved to Execration, where he immediately took third place in the European Pro League World Series Southeast Asia Season 1 and entered the top 6 in the Kobolds Rave #1.

In January 2024, Yona left Execration, and in May joined Sabong esports. With this team, he advanced to the Closed Qualifier for the Elite League Season 2 for Southeast Asia.