It’s officially time.

Prime’s Marty Snider revealed ahead of Sunday’s NASCAR Cup Series race in San Diego that Brent Crews will step into the No. 20 Toyota in place of Christopher Bell, once the first caution takes place.

This will mark the 18-year-old’s first racing experience in the Cup Series, and because it will be a mid-race fill-in, Bell will still accumulate the points for the event.