Since arriving in MotoGP in 2013 Marc has been a league above his rivals, winning four titles in five seasons with Repsol Honda.
While Marc has been dominating the sport, Alex has been forging his way in the lower classes – winning the Moto3 title in 2014 before stepping up to Moto2.
After taking time to adjust, the 21-year-old finished fourth in the standings this year and his improvement was rewarded with a private test on the Marc VDS MotoGP bike in Jerez.
The Spaniard impressed with some good times and hopes it is the start of his progression to being a regular member of the paddock, challenging his brother.
“In the end it’s a motivation for me to have this experience, to try and win in Moto2 and to try and move to MotoGP in 2019,” said the younger Marquez.
“But now I need to focus on the winter and the first test with Moto2. I’ll have to forget a little bit this experience that was really nice.”