Here is a 2010 Kelly Starrett with a nice hip warm-up sequence.
Maybe you find a movement you can incorporate into your warm-up.
For me it was the duck walks. I have not done these in a long time.
Try the advanced version if you can: hold a barbell overhead while duck walking. Heard Glenn Pendlay talk about these in a recent Weightlifting Talk episode too.
More Hip Openers.