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The 1970 International Tennis Players Association Open Indoor or ITPA Open Indoor was an ILTF tennis tournament played on indoor carpet courts. It was played at the Spectrum in Philadelphia, Pennsylvania in the United States. It was the third edition of the tournament and was held from February 2 through February 8, 1970.
The men's singles was won by Rod Laver, his second consecutive singles title at the event, and the women's singles was won by Margaret Court
It was Nastase's 1st title of the year and the 2nd of his professional career. It was Țiriac's 1st title of the year and the 1st of his professional career.
Rod Laver
Ilie Năstase / 
Arthur Ashe /