Career Story

Early Life and the Road to Professional Play

Oi grew up in Japan, a country with a deep and competitive domestic billiards culture. The Japanese professional pool scene operates its own ranking structure, and for players like Oi, coming through that system means earning credibility in a fiercely competitive domestic environment before the international circuit even becomes a realistic goal.

In an interview with Billiards Days, Oi reflected on what it feels like to travel the world tour as a largely independent professional. “It’s basically the same feeling as touring Japan,” he said. “At first, Japan felt huge and I thought it was tough, but gradually it became normal.” That mindset, treating the grind of international travel as something to be normalized rather than endured, speaks to a competitive maturity that has defined his approach throughout his career. He has also acknowledged the harder side of life on tour, noting that travelling alone means “time spent suffering by myself,” a candid admission that the glamour of professional pool rarely tells the full story.

His first appearance at the WPA World Nine-Ball Championship came in July 2005, where he competed but was eliminated in the preliminary round. That early exit, rather than discouraging him, became part of a longer learning curve that would eventually pay off on the biggest stages in the sport.

Career Highlights

Oi’s international breakthrough came at the World Cup of Pool, the team-format event that pairs players by nationality and consistently produces some of the most dramatic pool played anywhere on the calendar. Oi has appeared in the tournament six times, a number that reflects both sustained competitive quality and national selection trust.

His debut came at the 2007 edition, partnering Satoshi Kawabata. The Japanese pair pushed through to the semi-finals before losing to the eventual champions, Li Hewen and Fu Jianbo of China. Reaching the last four at a World Cup of Pool is no small achievement given the field quality, and Oi announced himself to the wider international audience with that run.

In 2015, Oi returned to the World Cup of Pool alongside partner Toru Kuribayashi and reached the semi-finals again. Two semi-final appearances across six World Cup campaigns is a record of consistent performance that few players from any nation can match at that event.

On the individual circuit, Oi has been building steadily toward ranking title success. His first World Nineball Tour ranking crown came at the 2024 Taom Maxrack event, a victory that confirmed he could close out a ranking tournament under pressure. Then, at the inaugural 2026 Carabao International Open in Indonesia, he secured his second WNT ranking title, again demonstrating that his 2024 success was no one-off. Reports from the event noted that Oi also entertained the crowd with some memorable celebration moments after the win, a side of the player that rarely surfaces in the more reserved environment of professional match play.

The Matchroom Pool profile for Oi describes him plainly as “one of Japan’s most accomplished pool players,” a description that, given the strength of Japanese pool domestically and internationally, carries real weight.

Playing Style

Oi is a nine-ball specialist, and his game reflects the discipline that format demands. Nine-ball rewards precise position play, controlled break-and-run execution, and the mental composure to convert opportunities against opponents who will punish any lapse. Oi has demonstrated all of these qualities at both the World Cup of Pool and WNT ranking events.

His cue action is built for consistency. Players who sustain careers across demanding international schedules tend to rely on a fundamentally sound and repeatable stroke rather than flashy shot-making, and Oi fits that profile. The quality of equipment matters at this level, and professionals like Oi are meticulous about their setup. For players interested in what goes into a serious competitive cue, a look at the best pool cues on the market gives a clear picture of the standards professionals expect.

The mental side of Oi’s game is arguably what separates him from the large pool of technically capable players who never manage to win at ranking level. His comments about normalizing the hardships of solo international travel suggest a player who actively manages pressure rather than simply hoping to avoid it. Winning a tournament debut edition, as he did at the 2026 Carabao International Open, requires holding nerve in unfamiliar circumstances, something Oi has shown he can do.

His World Cup performances also show a capacity to perform in team formats, where the dynamic shifts and the emotional stakes of representing a partner and a nation add a different kind of weight. Two semi-final appearances from six World Cup starts confirms that his game travels across formats as well as geographies.

Japan’s Pool Scene and Oi’s Place in It

Japan has produced a number of competitive international pool players, and domestic billiards has an organized professional ranking structure that creates genuine pathways for development. Competing and ranking domestically in Japan is, as Oi himself framed it, preparation for the international tour rather than a separate pursuit. The standards required to succeed in Japanese professional pool force players to be technically precise and tactically sharp long before they step into a Matchroom Pool or WNT event.

Oi sits near the top of that domestic landscape while continuing to compete internationally. His dual success, in team formats and in individual ranking events, makes him one of the more complete players Japan has produced in the nine-ball discipline. For fans following the development of pool in Asia more broadly, Oi’s trajectory mirrors a wider trend of Asian players asserting themselves as genuine title contenders on the world tour rather than credible first-round opponents who occasionally upset higher seeds.

The equipment culture surrounding professional pool in Japan and across Asia is also worth noting. Serious amateur players following Oi and his contemporaries often look to replicate the setup standards of the pros. Paying attention to something as specific as cue tips, for instance, can make a measurable difference in how a player controls the cue ball, which is the foundation of nine-ball position play.

Frequently Asked Questions

How many World Nineball Tour ranking titles has Naoyuki Oi won?

Oi has won two WNT ranking titles: the 2024 Taom Maxrack event and the inaugural 2026 Carabao International Open held in Indonesia.

What is Naoyuki Oi’s record at the World Cup of Pool?

Oi has appeared at the World Cup of Pool six times and reached the semi-finals on two occasions, in 2007 with Satoshi Kawabata and in 2015 with Toru Kuribayashi.

What nationality is Naoyuki Oi?

Naoyuki Oi is Japanese and competes representing Japan in both individual and team international pool events.

What format does Naoyuki Oi specialize in?

Oi is primarily a nine-ball specialist, and his major international results have come in nine-ball formats including the World Cup of Pool and World Nineball Tour ranking events.

When did Naoyuki Oi first compete at a WPA World Championship?

Oi competed at the WPA World Nine-Ball Championship in July 2005 but was eliminated in the preliminary round, making that his earliest recorded appearance at a world championship level event.