As far as I know, the host of a group absorbs the chances of his invited mates for the firstpick. (didn't find a reference to that though i think i read in on the official site)
When taking the comment here the chance to be firstpick should be 20%, when playing solo, as soon as you play with mates, and (given the case the previous assumption is correct and) you are not the host, you will never be firstpick.
- Players with faster load times shouldn’t have an unfair advantage in Call Order
- Pick Order occurs naturally in the current design, so it’s more intuitive
- Over time, players get an equal number of opportunities to be each pick slot
- Players shouldn’t have to race to type a position at the start of each match
On the other hand when you are the host, you will have more chances for first place, as you absorbed your mates' chances. Problem is, these still are only 40% at max. thus you might end up second.