1995

Luca Cadalora and Norifumi (Norick) Abe competed in the series from Marlboro Yamaha Team Roberts. Despite a difficult early part of the season, Cadalora finished 3rd in the ranking with consecutive wins in rounds 10 and 11 in Czechoslovakia and Brazil, as well as three 2nd-place finishes and one 3rd-place finish. Abe finished ninth in the ranking, with notable results including a 3rd-place finish in the Brazillian GP.

In the opening round in Australia, Cadalora broke a finger on his right hand in a fall, but he was still able to hold off his hard-charging rival Kevin Schwantz (Suzuki) and finished 4th. He suffered from front tire slippage in the following race in Malaysia, which caused him to retire from the race. In the third round in Japan, he finished 4th with a 19-second deficit after not being able to find good form in the wet conditions. However, he took his first podium of the season by finishing 2nd in the fourth round in Spain after returning to Europe. He then went on to claim 2nd place in the fifth round in Germany. It appeared as though he was regaining his form, but he lacked speed in subsequent races, with a 12th-place finish in his home GP, and a 7th place in the Netherlands. This dropped him down to 5th in the championship ranking.

In the eighth round in France, he led the early part of the race. He was soon overtaken by Mick Doohan (Honda), but he fended off his rival Beattie (Suzuki) to finish 2nd. This set him back up to 3rd in the championship ranking. Cadalora's performance improved from this point in the season. Despite finishing 5th in the ninth round in Britain, he took his first win of the season in the following round in the Czech Republic. He also won the following race in the Brazil with a 5-second gap over Doohan. He then took 3rd place in the 13th round in Argentina. He retired early due to physical pain in the final round in Catalunya, but he ended the season ranked 3rd.

Abe, who entered the full season for the first time this year, kicked it off by finishing 9th in the opener. He was unable to match the pace of the frontrunners in the early part of the season, but he was able to finish 4th in the fourth round in Spain. He then went on to battle at the front in the ensuing races. Despite a few no-pointers due to falls, he qualified 4th in the tenth round in the Czech Republic and led the race in the early part of the race. However, he fell in lap seven while running in 3rd, and had to withdraw again from the race. In the following race in Brazil, he finished 3rd which was his first podium shared with his teammate Cadalora.

Despite not being able to match the championship winner, Max Biaggi (Aprilia), Tetsuya Harada of Yamaha Marlboro Team Rainey finished 2nd overall after a win in the Spanish GP and eight 2nd-place finishes. His teammate Kenny Roberts finished 8th in the ranking.

After finishing 2nd in the first two rounds in Australia and Malaysia, Harada took pole position in the third round in Japan. His chances were good to win this round, but then rain fell on race day. In a survival race where the downpour resulted in a red flag, Harada secured points by finishing 4th. He took pole position again in the following race in Spain, made a great start in the race to come out in front, and held the lead right through to the checkered flag. Harada brought himself to the top of the championship ranking by taking his first win since the 1993 European GP. However, the subsequent races in Germany, Italy, and the Netherlands were won by his rival Biaggi. Harada defended his championship lead by finishing 2nd in the German and the Italian GPs, but he missed the race in the Netherlands after falling in the qualifying. This moved him down the championship ranking. There was a 25-point deficit with Biaggi after the Netherlands GP. After rejoining the competition, however, this gap widened after a 5th in France, and two 2nd-place finishes behind Biaggi in Britain and in the Czech Republic. In the 11th round in Brazil, Harada made a strong recovery from 14th to 5th while recording the fastest lap of the race, but Biaggi was able to clinch the championship by finishing 2nd. In the final race in Argentina, Harada finished in 2nd place for the seventh time this season, just two-tenths of a second behind Biaggi. This put Harada in 2nd overall. Kenny Roberts Jr., on the other hand, finished 8th in the ranking after a best result of a 4th place finish in the fifth round in Germany, as well as two 5th-place finishes and two 6th-place finishes.

Yoshiaki Kato and Jorge Martinez competed this season from Team Aspar Cepsa Yamaha on the TZ125. They could not match the pace of their rivals, however, with their best result being a 6th by Kato in the Japanese GP, and with many no-pointers. Kato and Martinez finished 14th and 18th overall respectively.