map pick: players pick heads or tails then they type call vote /cv random 2 into console. Each player drops one map (the one who won the toss decides who drops first map). The last map is played.
Regular rounds are best of one so only one map is played! The one who lost a map falls into loosers brackets where he has one more chance.
Finals of winners and loosers bracket are best of three. The one who won the toss decides who picks first map.