1998 Grand Prix motorcycle racing season

[1] After being shocked by 500 class rookie Max Biaggi's opening round victory in the Japanese Grand Prix, Doohan went on to claim his fifth world championship in as many years, finishing off the season with four consecutive wins.

Entering the final turn, his bike was struck from behind by Capirossi's machine, sending both riders off the track.

[1] Kazuto Sakata would win his second 125 title for Aprilia after a tight battle with Tomomi Manako and Marco Melandri.

Bold – Pole positionItalics – Fastest lap [5] Points were awarded to the top fifteen finishers.

Bold – Pole positionItalics – Fastest lap [6] Points were awarded to the top fifteen finishers.