1973 USLTA Indoor Circuit
The 1973 USLTA Indoor Circuit was a professional tennis circuit held in the United States from January until March that year. It consisted of 13 tournaments and was organized by Bill Riordan and sanctioned by the United States Lawn Tennis Association.
Schedule
March
| Week of | Tournament | Champion | Runner-up | Semifinalists | Quarterfinalists | ||
| 5 Mar | Paramus Tennis Classic Paramus, New Jersey, U.S. Hard – 16S/8D |  Prize money standings
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