As mentioned, excessive (you want ~.5 or less, IMO excessive is 1.0+) cross caster (difference between L&R caster) caused drift/pull to low side. It's just suspicious you had a pull to the left and now your alignment appears to push right.
Who knows, car could be bent. Rotate the tires & see if anything changes. No? You're fine. Pulls to the right? You have a tire & alignment issue.
Read up on cross caster...