1972 U.S. Professional Indoor – Singles

The 1972 U.S. Professional Indoor – singles was an event of the 1971 U.S. Professional Indoor men's tennis tournament played at the Spectrum in Philadelphia in the United States from February 8 through February 13, 1971. The draw comprised 32 players and 8 of them were seeded. John Newcombe was the defending singles champion but lost in the second round. First-seeded Rod Laver won the title, defeating second-seeded Ken Rosewall in the final, 4–6, 6–2, 6–2, 6–2.

Seeds

 * 1) 🇦🇺 Rod Laver (champion)
 * 2) 🇦🇺 Ken Rosewall (final)
 * 3) 🇺🇸 Arthur Ashe (semifinals)
 * 4)  Tom Okker (semifinals)
 * 5) 🇦🇺 John Newcombe (second round)
 * 6)  Cliff Drysdale (quarterfinals)
 * 7) 🇺🇸 Marty Riessen (quarterfinals)
 * 8) 🇺🇸 Robert Lutz (quarterfinals)