Simplify the following text for a Grade 7 native English-speaking person.
Original: He equalled one track record for two-year-olds at the Los Angeles County Fair race meeting in Pomona , California , running 330 y in 17.2 seconds .
Simplified: He did equal one track record for two-year-olds at Pomona Racetrack , running 330 y in 17.2 seconds .