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As of round 17 Race · updated 10/13/2026, 07:18 PM (Japan time)

Riders

Tsumoto Udagawa

No freely licensed photo found, so the race number and team colour are shown instead. About photos

Nationality
Japan Japan
Bike
ROC Yamaha
Born
August 1, 1964(age 62)

Birth date and place from the official rider profile

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Career

Made a Grand Prix debut in 250cc at Suzuka in 1990.

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In 250cc (1990–1991): 2 starts, 0 wins, 0 podiums. In 500cc (1993): 8 starts, 0 wins, 0 podiums.

In all, 10 Grand Prix starts, 0 wins and 0 podiums (within the official results database).

Written automatically from the official results database (no opinions about the rider)

Starts with no race result

The official records keep only the qualifying order and the starting grid for these races; the race result is missing (the official site has none either).

YearEventClassGridQualifying
1993Japanese GP500cc11

Note: these totals are incomplete. The official data has no result for 1 races in seasons and classes this rider raced in; they are not counted: 1993 500cc (JPN)

Season by season

250cc500cc ★ Champion

110203019901991199219931990 250cc: P32 / 6 pts / 0 wins1991 250cc: P28 / 6 pts / 0 wins250cc1993 500cc: P20 / 18 pts / 0 wins500cc

The strip shows each year's team (team colour). Tap for team and machine

Scope: official results DB, 1990–1993 (the rider's racing years); excludes 1 races with no official result data

Totals

250cc1990–1992
Win rate0.0%
Podium rate0.0%
Average finish (when classified)avg P10.0

12 pts · Poles 0

1 of these races have no result in the official data; their results come from the Italian Wikipedia.

500cc1993–1993
Win rate0.0%
Podium rate0.0%
Average finish (when classified)avg P14.9

18 pts · Poles 0

Includes 2 points from races with no result in the official records (counted from the official standings).

4 of these races have no result in the official data; their results come from the Italian Wikipedia.

Points are counted per class, never added across classes. Tap a number for the list of races | Scope: official results DB, 1990–1993 (the rider's racing years); excludes 1 races with no official result data

Against the greats, and the class of their debut

Grand Prix debut in 1990. Of the 41 riders who debuted that year, 0 also raced in 2026.

Greats: 2+ world titles or 30+ MotoGP / 500cc wins. Up to 4 who shared 10+ races, most titles first. A finisher counts as ahead of a non-finisher.

Results by condition (races)

All classes 14 races · 250cc / 500cc

By circuit (best average first)Small sample

Suzuka250cc 3avg P10.0
Jerez500cc 1avg P10.0
Hockenheim500cc 1avg P11.0
Assen500cc 1avg P14.0
Eastern Creek500cc 1avg P14.0
Salzburgring500cc 1avg P15.0
Laguna Seca500cc 1avg P17.0
Misano500cc 1avg P23.0
Catalunya500cc 1—
Mugello500cc 1—
Shah Alam500cc 1—
Jarama500cc 1—

Average finish across classes (Moto3, Moto2, MotoGP and so on together). See each class below for class-only figures. Only circuits with 3+ races count as a best track.

500cc 11 races · 1993

By grid positionSmall sample

average grid average finish (classified)

15101520Starting Grid 10–15: average grid 13.5 → average finish 13.3 (6 races, 0 wins)Grid 10–15Starting Grid 16〜: average grid 22.8 → average finish 17.0 (4 races, 0 wins)Grid 16〜
Grid 10–1513.5 → 13.30 wins / 6 races
Grid 16〜22.8 → 17.00 wins / 4 races

By circuit (best average first)Small sample

Jerez1 racesavg P10.0
Hockenheim1 racesavg P11.0
Assen1 racesavg P14.0
Eastern Creek1 racesavg P14.0
Salzburgring1 racesavg P15.0
Laguna Seca1 racesavg P17.0
Misano1 racesavg P23.0
Catalunya1 races—
Mugello1 races—
Shah Alam1 races—
Jarama1 races—

500cc: all in the Multiple suppliers era; no track-condition records.

250cc 3 races · 1990–1992

By grid positionSmall sample

average grid average finish (classified)

1510Starting Grid 4–6: average grid 4.0 → average finish 10.0 (1 races, 0 wins)Grid 4–6Starting Grid 10–15: average grid 12.0 → average finish 10.0 (1 races, 0 wins)Grid 10–15
Grid 4–64.0 → 10.00 wins / 1 races
Grid 10–1512.0 → 10.00 wins / 1 races

250cc: all in the Multiple suppliers era; no track-condition records; one circuit only.

Fewer than 30 races: small sample (dashed). Average finish counts classified finishes only | Scope: official results DB, 1990–1993 (the rider's racing years); excludes 1 races with no official result data

Distance ridden and distance travelled

Counted from 1949 (lap lengths before 1998 researched from published sources: estimates)14 races with an estimated lap length

Ridden on the bike

Every session

at least 788 miles
0.0× around the Earth · 267 laps

Travelled between circuits

at least 15,765 miles
0.6× around the Earth · at least 1.4 days

From 1949. Every session in the seasons with the lap analysis documents, races only before. Tests not included. Laps × that year's lap length.A minimum, calculated from straight-line distances between circuits. Connections, tests and trips home are not included, so the real figures are longer.

Every race

84.6%Start rate (11/13)
2Longest run of absences (races)
8Longest run of starts (races)
1.3Estimated points lost to absences
1Win3Podium8Points18No pointsRRetired–Absent
1993 500cc P20 · 18 pts

Tap a cell for the event, qualifying, sprint and race results and points

? How the estimate is made

Estimate = average of the last 3 races before each absence

Seasons in which at least half of the races were started | Scope: official results DB, 1990–1993 (the rider's racing years); excludes 1 races with no official result data

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