Conversation so far:
What was the 125cc world championship in relation to Marc Marquez?
Marc Márquez made his championship debut on 13 April 2008 at the 125cc 2008 Portuguese Grand Prix at the age of 15 years and 56 days
Did Marc Marquez set any other records than being the youngest Spanish rider to take a pole position or a podium in a motorcycle racing world championship at the 125cc 2008 Portuguese Grand Prix in 2008?
For 2009, as a factory KTM rider at the French Grand Prix, Marc Marquez achieved his first pole position at the age of 16 years and 89 days.
How old was Marc Marquez when he achieved his first pole position in 2009?
For 2009, as a factory KTM rider at the French Grand Prix, Marc Marquez achieved his first pole position at the age of 16 years and 89 days.
Who did Marc Marquez race again during the 125cc World Championship?
Marc Marquez raced Nicolás Terol again.

Question: Who did he race against?
Self-contained rewrite: Who did Marc Marquez race against in the 125cc World Championship?