LOS ANGELES (AP) — Pac-12 Commissioner George Kliavkoff says his conference is far from finished, despite the defections of Southern California and UCLA.

Kliavkoff confirmed the Pac-12 is actively exploring expansion during an eventful, occasionally feisty opening speech at his conference’s football media day in the nation’s second-largest media market.

While painting a promising picture of the league’s future even after USC and UCLA leave for the Big Ten in 2024, Kliavkoff also threw several jabs at the Big 12.

The commissioner said he had spent the past month “trying to defend against grenades being lobbed in from every corner of the Big 12 trying to destabilize our conference.”