UnScramble this Word: h l i a u y g s?

Questions

What is the only sport that has a rule against left handed players?

What is the only word in the english language that begins and ends with 'und'?

What is the part of the nose that separates the two nostrils?

What is the part of the sole between the heel and the ball of the foot?

What is the perforated tag with advertisements that are put in mailer envelopes?