Yesuntumur “nin9” Gantulga entered the world of esports in 2017. His professional career began in the CS:GO discipline. His first team was Born in Mongolia, where he was unable to achieve notable results. As a result, the player moved to The MongolZ, but he didn’t achieve much success there either. Afterward, Gantulga signed with Storm Rider, and it turned out to be the right move. Together with the team, he managed to win the Intel Master Challenger 2018.
In February 2019, Yesuntumur received an offer to extend his contract and accepted it. However, by April, he left the team and played in several tournaments for Ex-Storm Rider. He also played for the Mongolian national team in the ESL One: Cologne 2019 Asian open qualifiers. After that, the esportsman joined Mazaalai, with whom he won silver at the HuyaTV SHARPSHOOTER Cup Season 1 and eXTREMESLAND 2019 - Mongolia, as well as bronze at the SEA Summit 2019.
In March 2020, the player's career took a new turn. He joined TIGER, quickly became one of the team’s leaders, and helped them win the championship title at ESL One: Road to Rio - Asia, Weibo Cup Asia Professional Championship 2020, ImbaTV CSGO Development League Season 1, ESEA Season 34: Open Division - Asia-Pacific, ImbaTV CSGO Professional League Season 2: Phase 1, ESEA Season 35: Open Division - Asia-Pacific, MESA Pro Series 2021 #1, and also won silver and bronze at DreamHack Masters Winter 2020: Asia and Huya DarkHorse League Season 5, respectively.
From March 2021 to January 2022, Yesuntumur “nin9” Gantulga played for Renewal. With the team, he managed to win gold in the following tournaments: 5E Arena Open Season 1: East Asia, ESEA Season 36: Open Division - Asia-Pacific, MESA Pro Series 2021 #3, DreamHack Open June 2021: Asia, ESEA Season 37: Open Division - Asia-Pacific, MESA Pro Series 2021, and IESF World Championship 2021: East Asia. Additionally, he secured silver at Funspark ULTI 2021: Asia Season 3 and bronze at Funspark ULTI 2021: Asian Points Ranking.
After these achievements, the Mongolian esportsman decided to change teams and joined Checkmate, where he won several more awards. The most notable ones were the gold medals at Jig Jug National Championship 2022: Invitational #1 and MESA League Season 2. In March 2022, he moved to IHC Esports, continuing his winning streak. He helped the team win gold at PGL Major Antwerp 2022: Asia-Pacific RMR, MESA Pro Series: Summer 2022, as well as silver at MESA Nomadic Masters: Spring 2022, ESL Challenger League Season 41: Asia-Pacific, and Jig Jug National Championship 2022.
In July 2022, Yesuntumur “nin9” Gantulga joined NKT, where he played until March 2023. During this time, he won the championship at Skyesports Championship 2022 and MESA League Season 3. After leaving the team, the player participated in several tournaments with lesser-known teams and also played for the Mongolian national team at the IESF World Esports Championship 2023, but did not achieve success.
In November 2023, the esportsman signed a contract with Huns Esports and continues to play for the team to this day. With them, he managed to win silver at MESA Pro Series: Winter 2023, ESL Challenger League Season 47 Relegation: Asia, and MESA League Season 4, as well as bronze at the ESEA Season 48: Open Division - Asia tournament.