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

Riders

Masao Shimizu

Nationality: Japan
Born: November 22, 1964(age 61)

Birth date and place from the official rider profile

Career

Made a Grand Prix debut in 250cc at Buenos Aires in 1987.

In 250cc (1987–1992): 46 starts, 0 wins, 6 podiums.

First podium: Buenos Aires 1987 (250cc).

In all, 46 Grand Prix starts, 0 wins and 6 podiums (within the official results database).

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

Season by season

250cc ★ Champion

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

Teams in years without official results: 1992 125cc

Scope: official results DB, 1987–1992 (the rider's racing years)

Totals

250cc1987–1992

Win rate0.0%

Podium rate12.3%

Average finish (when classified)avg P6.7

492 pts · Poles 1

27 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, 1987–1992 (the rider's racing years)

Against the greats, and the class of their debut

Grand Prix debut in 1987. Of the 78 riders who debuted that year, 1 also raced in 2026.

Anton Mang 5 world titles
11 races together: ahead 6, behind 4, both out 1
Max Biaggi 4 world titles
16 races together: ahead 9, behind 6, both out 1
Jorge Martinez 4 world titles
14 races together: ahead 9, behind 2, both out 3
Luca Cadalora 3 world titles
73 races together: ahead 20, behind 52, both out 1

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)

250cc 73 races · 1987–1992

By grid positionSmall sample

From Grid 10–15, they move up from an average grid of 12.1 to an average finish of 7.9

average grid average finish (classified)

Grid 1–3	2.2 → 3.5	0 wins / 4 races
Grid 4–6	5.3 → 3.9	0 wins / 9 races
Grid 7–9	8.1 → 4.9	0 wins / 18 races
Grid 10–15	12.1 → 7.9	0 wins / 29 races
Grid 16〜	18.0 → 10.5	0 wins / 10 races

By circuit (best average first)Small sample

In 250cc, best at Anderstorp (average P3.0, 3 races)

Anderstorp3 racesavg P3.0

Buenos Aires1 racesavg P3.0

Jerez5 racesavg P4.0

Hungaroring2 racesavg P4.0

Imola1 racesavg P4.0

Hockenheim3 racesavg P4.3

Le Mans3 racesavg P5.3

Donington5 racesavg P5.4

Jarama2 racesavg P5.5

Mugello2 racesavg P6.0

Paul Ricard2 racesavg P6.0

Nürburgring2 racesavg P6.0

Brno4 racesavg P6.3

Assen5 racesavg P6.5

Goiânia3 racesavg P6.7

Salzburgring4 racesavg P7.3

Shah Alam2 racesavg P8.0

Suzuka5 racesavg P8.3

Misano3 racesavg P8.7

Laguna Seca3 racesavg P8.7

Spa3 racesavg P9.0

Phillip Island2 racesavg P11.0

Kyalami1 racesavg P11.0

Rijeka2 racesavg P12.0

Interlagos1 racesavg P13.0

Eastern Creek2 races—

Catalunya1 races—

Magny-Cours1 races—

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

Fewer than 30 races: small sample (dashed). Average finish counts classified finishes only | Scope: official results DB, 1987–1992 (the rider's racing years)

Distance ridden and distance travelled

Counted from 1949 (lap lengths before 1998 researched from published sources: estimates)51 races with an estimated lap length

Ridden on the bike

Every session

at least 2,942 miles
0.1× around the Earth · 1,057 laps

Travelled between circuits

at least 135,630 miles
5.4× around the Earth · at least 12.2 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

95.9%Start rate (70/73)

2Longest run of absences (races)

50Longest run of starts (races)

8.7Estimated points lost to absences

1Win3Podium8Points18No pointsRRetired–Absent

1988 250cc P10 · 68 pts

1989 250cc P6 · 116 pts

1990 250cc P7 · 100 pts

1991 250cc P5 · 142 pts

1992 250cc P9 · 46 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, 1987–1992 (the rider's racing years)

1987	Suzuka	grid 1	4 +8
1987	Goiânia	grid 12	9 +2
1987	Buenos Aires	grid 2	3 +10
1988	Jarama	grid 17	5 +11
1988	Jerez	grid 9	2 +17
1988	Imola	grid 7	4 +13
1988	Nürburgring	grid 16	DNF
1988	Salzburgring	grid 11	6 +10
1988	Assen	grid 11	DNF
1988	Spa	grid 17	DNF
1988	Rijeka	grid 13	DNF
1988	Paul Ricard	grid 9	DNF
1988	Donington	grid 16	9 +7
1988	Anderstorp	grid 9	DNF
1988	Brno	grid 16	13 +3
1988	Goiânia	grid 14	9 +7
1989	Suzuka	grid 17	13 +3
1989	Phillip Island	grid 25	14 +2
1989	Laguna Seca	grid 17	10 +6
1989	Jerez	grid 20	7 +9
1989	Misano	grid 14	11 +5
1989	Hockenheim	grid 8	3 +15
1989	Salzburgring	grid 7	10 +6
1989	Assen	grid 14	11 +5
1989	Spa		9 +7
1989	Le Mans	grid 13	7 +9
1989	Donington	grid 8	3 +15
1989	Anderstorp	grid 14	DNF
1989	Brno	grid 6	2 +17
1989	Goiânia		2 +17
1990	Suzuka	grid 8	DNF
1990	Laguna Seca	grid 11	11 +5
1990	Jerez	grid 8	DNF
1990	Misano	grid 10	8 +8
1990	Nürburgring	grid 10	6 +10
1990	Salzburgring	grid 10	DNF
1990	Rijeka	grid 13	12 +4
1990	Assen	grid 8	4 +13
1990	Spa	grid 13	9 +7
1990	Le Mans	grid 6	4 +13
1990	Donington	grid 5	2 +17
1990	Anderstorp	grid 11	3 +15
1990	Brno	grid 5	DNF
1990	Hungaroring	grid 11	DNF
1990	Phillip Island	grid 11	8 +8
1991	Suzuka		8 +8
1991	Eastern Creek	grid 12	DNF
1991	Laguna Seca	grid 9	5 +11
1991	Jerez	grid 3	4 +13
1991	Misano	grid 8	7 +9
1991	Hockenheim	grid 7	5 +11
1991	Salzburgring	grid 9	6 +10
1991	Jarama	grid 10	6 +10
1991	Assen	grid 6	6 +10
1991	Paul Ricard	grid 8	6 +10
1991	Donington	grid 6	4 +13
1991	Mugello	grid 5	4 +13
1991	Brno	grid 8	4 +13
1991	Le Mans	grid 5	5 +11
1991	Shah Alam	grid 4	DNF
1992	Suzuka	grid 14	DNF
1992	Eastern Creek	grid 7	DNF
1992	Shah Alam	grid 12	8 +3
1992	Jerez	grid 3	3 +12
1992	Mugello	grid 13	8 +3
1992	Catalunya	grid 14	DNF
1992	Hockenheim	grid 10	5 +8
1992	Assen	grid 12	5 +8
1992	Hungaroring	grid 14	4 +10
1992	Magny-Cours	grid 9	DNF
1992	Donington	grid 12	9 +2
1992	Interlagos	grid 19	13
1992	Kyalami	grid 13	11