aMSa
aMSa is the competitive alias of Japanese Super Smash Bros. Melee player Masaya Chikamoto, internationally known for making Yoshi a viable championship character.
Last updated August 25, 2026
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Overview
aMSa is the competitive gaming alias of Masaya Chikamoto, a Japanese professional player specializing in Super Smash Bros. Melee. Born in Hyōgo Prefecture on October 27, 1991, Chikamoto became associated with Yoshi from the earliest period of his relationship with the Super Smash Bros. series. His long-term commitment to the character became the defining feature of his professional identity. In a game whose competitive tier lists historically placed Yoshi among the weakest characters, aMSa developed a distinctive solo-Yoshi style built around movement, defensive precision, egg-projectile control, aerial attacks, recovery options, and matchup-specific adaptation. Chikamoto began his professional career in 2013. His early results were notable because they demonstrated that Yoshi could compete with elite Melee characters and players. Among his early achievements was a win over Mew2King, who was ranked third in the world at the time. aMSa also performed strongly at Apex, placing ninth in 2014 and fifth in 2015. These results helped establish him as the leading Yoshi specialist in the international Melee scene. His competitive influence extended beyond tournament placements. Through sustained high-level performances, aMSa contributed to a reassessment of Yoshi's position in the game. By 2021, Yoshi was being discussed as approximately the tenth-best character among Melee's 26-character roster, a significant improvement over earlier perceptions of the character as one of the game's least viable choices. aMSa's play therefore became both a personal competitive achievement and a case study in how specialized mastery can challenge established assumptions about a fighting game's metagame. In February 2019, aMSa signed with Red Bull, giving him a major international esports sponsor and increasing his visibility beyond the core Melee community. In 2022, he moved to Vancouver, Canada, to compete more regularly in North American tournaments. That relocation preceded the most successful season of his career. On October 10, 2022, he won The Big House 10, defeating Mang0 in the final stages of the tournament. The event featured an unusually deep field of leading Melee players and was widely regarded within the community as one of the most difficult major tournaments to win. aMSa's victory was historic because it was the first major Melee championship won using only Yoshi. Later in 2022, he added major victories at Apex and Scuffed World Tour. These results made aMSa the first player from Asia to win a Melee supermajor and placed him second in the year-end SSBMRank world rankings. His success also broadened the international profile of competitive Melee and demonstrated that a player using a single historically undervalued character could reach the very highest level of the scene. In March 2023, aMSa joined the esports organization Golden Guardians. His association with the organization ended after Golden Guardians disbanded its Melee player roster on November 30, 2023. He has continued to be recognized as one of the defining players in modern Super Smash Bros. Melee. The SSBMRank 2025 listing placed him 23rd in the world, indicating continued relevance in a highly competitive and long-running game community. aMSa's identity is therefore centered less on a conventional consumer product brand than on a personal esports brand: a Japanese competitor, Red Bull-sponsored player, and globally recognized Yoshi specialist whose results changed perceptions of one of Melee's most unusual characters.
History
Masaya Chikamoto, known competitively as aMSa, was born in Hyōgo Prefecture, Japan, on October 27, 1991. He developed an early attachment to Yoshi and retained the character as his primary choice after the release of Super Smash Bros. Melee. This choice was strategically unusual: for much of Melee's competitive history, Yoshi was regarded as a weak character and was sometimes placed near the bottom of the game's tier lists. Chikamoto's career became a sustained effort to demonstrate that the character could succeed against the game's established elite. He entered professional competition in 2013. His early results included a notable victory over Mew2King, then ranked third in the world, as well as strong Apex finishes: ninth place in 2014 and fifth place in 2015. These performances established aMSa as the leading Yoshi player and one of the scene's most distinctive specialists. His influence was not limited to isolated upsets. By 2021, Yoshi's perceived competitive standing had risen substantially, with the character being discussed as approximately tenth among Melee's 26 characters. aMSa's technical innovations, consistency, and matchup knowledge were central to that change in perception. In February 2019, aMSa signed with Red Bull. The sponsorship gave him an important platform within the increasingly international esports economy and helped connect his personal identity with a major global sports and lifestyle company. In 2022, he moved to Vancouver, Canada, in order to compete more frequently in North American events, where many of Melee's largest tournaments and deepest player pools are held. The 2022 season was the decisive turning point in aMSa's career. On October 10, he won The Big House 10 after defeating Mang0. The tournament contained a particularly strong field and was widely considered one of the most difficult major events in the game's history. The victory was historically significant because aMSa won the event using only Yoshi, becoming the first player to capture a Melee major with a solo-Yoshi strategy. Later that year he also won Apex and Scuffed World Tour. These victories made him the first player from Asia to win a Melee supermajor and contributed to his second-place finish in the SSBMRank 2022 world rankings. In March 2023, aMSa joined Golden Guardians. His tenure with the organization ended when Golden Guardians disbanded its roster of Melee players on November 30, 2023. Despite that organizational change, aMSa remained a prominent figure in competitive Melee. The SSBMRank 2025 ranking placed him 23rd globally. His historical importance rests on several connected achievements: he became the most successful Yoshi specialist in the game's history, helped raise the character's competitive reputation, brought greater visibility to Asian participation in the international Melee circuit, and proved that a highly specialized game plan could win against the strongest available field.
- 2025
SSBMRank 2025 placement
[1]aMSa was ranked 23rd in the world in the SSBMRank 2025 listing.
- 2023
Joins Golden Guardians
[1]aMSa joined Golden Guardians in March.
- 2023
Golden Guardians Melee roster ends
[1]Golden Guardians disbanded its Melee roster on November 30, ending aMSa's association with the organization.
- 2022
Relocation to Vancouver
[1]aMSa moved to Vancouver, Canada, to compete more regularly in North American tournaments.
- 2022
Historic major-tournament season
[1]aMSa won The Big House 10, Apex, and Scuffed World Tour, and finished second in the SSBMRank world rankings.
- 2021
Yoshi's competitive reputation improves
[1]Following aMSa's performances, Yoshi was regarded as roughly the tenth-best character in Melee rather than one of the weakest.
- 2019
Red Bull sponsorship
[1]aMSa signed with Red Bull in February.
- 2015
Fifth place at Apex
[1]aMSa improved to fifth place at Apex, reinforcing his status as the leading competitive Yoshi player.
- 2014
Ninth place at Apex
[1]aMSa finished ninth at Apex, an early international result for his Yoshi-focused career.
- 2013
Begins professional Melee career
[1]Chikamoto began competing professionally under the alias aMSa and recorded early results that included a win over elite player Mew2King.
Products and positioning
A specialist esports identity built around elite Super Smash Bros. Melee performance, distinctive solo-Yoshi gameplay, and the international visibility of a Japanese player competing across Asian and North American circuits.
Esports competition · 2013
Competitive Super Smash Bros. Melee play
aMSa's principal professional activity is tournament competition in Super Smash Bros. Melee. His public identity is strongly associated with solo-Yoshi play, using a character historically considered difficult to succeed with at the highest level. His tournament performances, technical approach, and matchup preparation form the core of his personal esports brand.
Esports specialization · 2013
Yoshi specialist gameplay
The signature offering of the aMSa identity is elite Yoshi gameplay. Rather than regularly changing characters, aMSa became internationally known for demonstrating that Yoshi could defeat top-ranked opponents and win the largest events. This specialization helped change competitive perceptions of the character and distinguished him from more conventional Melee professionals.
Brand decisions
2023
Joins Golden GuardiansOtherBackground
After his historic 2022 tournament season, aMSa joined a larger esports organization.
Action taken
He joined Golden Guardians in March 2023.
Aftermath
The relationship ended when Golden Guardians disbanded its Melee roster on November 30, 2023.
2022
Relocates to VancouverStrategyBackground
North America hosts many of the largest and deepest Super Smash Bros. Melee tournaments, while aMSa was seeking more frequent access to that competition.
Action taken
aMSa moved from Japan to Vancouver, Canada, to compete more regularly in North American events.
Aftermath
The relocation preceded his breakthrough 2022 season, including wins at The Big House 10, Apex, and Scuffed World Tour.
2019
Accepts Red Bull sponsorshipStrategyBackground
As a prominent international Melee competitor and the leading Yoshi specialist, aMSa entered a sponsorship relationship with Red Bull in February 2019.
Action taken
He joined Red Bull's sponsored esports roster.
Aftermath
The partnership increased the visibility of aMSa's personal esports identity and connected him with a major international sponsor.
Sources1 sources
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