id   | Name
 1    | some-name#1
 2    | some-name#2
 3    | some-name#3

id   | team_id1 | team_id2 | result1 | result2
 1   |     2    |    3     |    -1   |   -1

has_many :matches

belongs_to :team_one, :foreign_key => "team_id1", :class_name => "Team"
belongs_to :team_two, :foreign_key => "team_id2", :class_name => "Team"

match = match.find(1)
match.team_one.name ### gives -> some-name#2
match.team_two.name ### gives -> some-name#3