Using relatedTo with 'Users' field I have a sports site I'm building where each team is set up as a user within a 'team' member group.  I have a channel called 'Schedule' that has only 2 fields; a user field to relate the schedule to a team and then a table for the list of games.

On the front-end if I have a profile page for each team (ie: http://www.example.com/{username}).  I'm having trouble outputting the correct schedule based on the username in the URL?
Without knowing how your templates look, I can only give you a basic example:

{% set team    = craft.users.username(craft.request.lastSegment) %}
{% set entries = craft.entries.section('schedules').relatedTo(team) %}


This should give you all entries in the schedules channel which have a relation to the team username.