what is the difference between the points juan martin del potro won defending and his new points?
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col : rank | player | points | points defending | points won | new points | withdrew due to row 1 : 5 | juan martín del potro | 5115 | 720 | 0 | 4395 | right wrist surgery row 2 : 6 | nikolay davydenko | 5145 | 360 | 0 | 4785 | broken wrist row 3 : 20 | radek štěpánek | 1705 | 90 | 0 | 1615 | fatigue row 4 : 23 | tommy haas | 1660 | 180 | 0 | 1480 | right hip surgery row 5 : 32 | gilles simon | 1395 | 90 | 0 | 1305 | right knee injury row 6 : 36 | ivo karlović | 1295 | 10 | 0 | 1285 | right foot injury row 7 : 10 | kim clijsters | 3890 | 0 | 0 | 3890 | left foot injury
what is the difference between the points juan martin del potro won defending and his new points?
Rank Player Points Points defending Points won New points Withdrew due to
5 Juan Martín del Potro 5115 720 0 4395 right wrist surgery
6 Nikolay Davydenko 5145 360 0 4785 broken wrist
20 Radek Štěpánek 1705 90 0 1615 fatigue
23 Tommy Haas 1660 180 0 1480 right hip surgery
32 Gilles Simon 1395 90 0 1305 right knee injury
36 Ivo Karlović 1295 10 0 1285 right foot injury
10 Kim Clijsters 3890 0 0 3890 left foot injury
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