Enrico Lorenzetti
Enrico Lorenzetti was an Italian professional Grand Prix motorcycle road racer who competed in the 1940s and 1950s.
He competed in the 1949 season riding a 500 cc Moto Guzzi and finished eighth overall with 7 points behind Johnny Lockett. In 1952, he won the 250 cc World Championship for Moto Guzzi.1949 point system:
| Position | 1 | 2 | 3 | 4 | 5 | Fastest lap |
| Points | 10 | 8 | 7 | 6 | 5 | 1 |
Points system from 1950 to 1968:
| Position | 1 | 2 | 3 | 4 | 5 | 6 |
| Points | 8 | 6 | 4 | 3 | 2 | 1 |
| Year | Class | Team | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | Points | Rank | Wins |
| 1949 | 500cc | Moto Guzzi | IOM
- | SUI
- | NED
- | BEL
3 | ULS
- | NAT
- | | | | 7 | 8th | 0 |
| 1951 | 250cc | Moto Guzzi | | SUI
- | IOM
3 | | | FRA
- | ULS
- | NAT
1 | | 12 | 4th | 1 |
| 1951 | 500cc | Moto Guzzi | ESP
- | SUI
3 | IOM
- | BEL
3 | NED
- | FRA
- | ULS
- | NAT
- | | 8 | 8th | 0 |
| 1952 | 250cc | Moto Guzzi | SUI
2 | IOM
2 | NED
1 | GER
- | ULS
2 | NAT
1 | ESP
- | | | 28 | 1st | 2 |
| 1953 | 250cc | Moto Guzzi | IOM
- | NED
4 | | GER
- | | ULS
4 | SUI
4 | NAT
1 | ESP
1 | 22 | 4th | 2 |
| 1953 | 350cc | Moto Guzzi | IOM
- | NED
1 | BEL
2 | | FRA
3 | ULS
- | SUI
- | NAT
1 | ESP
- | 26 | 2nd | 2 |
| 1954 | 350cc | Moto Guzzi | FRA
- | IOM
- | ULS
- | BEL
4 | NED
2 | GER
- | SUI
- | NAT
2 | ESP
8 | 15 | 5th | 0 |
| 1955 | 250cc | Moto Guzzi | | IOM
- | GER
- | | NED
4 | ULS
- | NAT
- | | | 3 | 12th | 0 |
| 1955 | 350cc | Moto Guzzi | FRA
- | IOM
- | GER
- | BEL
- | NED
- | ULS
- | NAT
4 | | | 3 | 12th | 0 |
| 1956 | 250cc | Moto Guzzi | IOM
- | NED
3 | BEL
- | GER
- | ULS
- | NAT
2 | | | | 10 | 3rd | 0 |
| 1957 | 250cc | Moto Guzzi | GER
4 | IOM
- | NED
- | BEL
- | ULS
- | NAT
3 | | | | 7 | 9th | 0 |
