rank player points points defending points won new points withdrew due to
rank
player
points
points defending
points won
new points
withdrew due to
number
number
number
number
number
number text number number number number text
5 juan martin del potro 5115 720 0 4395 right wrist surgery
what is the difference between the points juan martin del potro won defending and his new points ?
WP VBD-AUX DT NN IN DT NNS NNP NNP NNP NNP VBD VBG CC PRP$ JJ NNS .
3675
select abs ( c4_number - c6_number ) from w where c2 = 'juan martin del potro'