1981 Grand Prix motorcycle racing season developed in the 1950s, to aluminium frames featuring large, twin beams as first pioneered by Spanish constructor, Antonio Cobas. The following Grands Prix were scheduled to take place in 1981: Points are awarded to the top ten finishers. A rider has to finish the race to earn points. 1981 Grand Prix motorcycle racing season The 1981 Grand Prix motorcycle racing season was the 33rd F.I.M. Road Racing World Championship season. Suzuki riders Marco Lucchinelli and Randy Mamola battled it out to the final race of the season with the Italian rider claiming the crown and Mamola finishing runner-up for the
1974 Grand Prix (tennis) position of a player in a tournament. No points were awarded to first-round losers, and ties were settled by the number of tournaments played. Grand Prix points were also allocated to doubles results for the first time this year and are listed in brackets in the points allocation below: In addition a player could earn ranking points for participating in the Davis Cup team competition if the matches coincided with a Grand Prix tournament. These are the ATP Rankings of the top twenty singles players at the end of the 1973 season and at the end of the 1974 season,