1978 U.S. Pro Indoor – Doubles

Bob Hewitt and Frew McMillan were the defending champions. Hewitt and McMillan successfully defended their title, defeating Vitas Gerulaitis and Sandy Mayer 6–4, 6–4 in the final.

Source: Wikipedia DBpedia

What is 1978 U.S. Pro Indoor – Doubles subject of?

1978 U.S. Pro Indoor – Doubles is subject of U.S. Pro Indoor and 1978 Grand Prix (tennis).