Background
You know the motivation pretty much covers this one.
Rudogga pilots a 57-D, as do many up-and-coming racers, and is somewhat famous in smaller racing circles for optimizing his engine output at a critical moment to make sweeping comebacks and win the heart of the crowd.
Motivation
Family: Rudogga is not-too-distantly related to the infamous racer Sebulba. Not only did he spectacularly lose the Boonta Eve Classic to a child, he lost to a human child, in the presence of Jabba the Hutt and most of Mos Espa. This remains the only podrace won by a human (to the knowledge of Rudogga and the rest of Mos Espa).
Thus, he has a reputation to recover before a personal reputation to earn.