1978 Bank of Oklahoma Grand Prix

The 1978 Bank of Oklahoma Grand Prix was a men's tennis tournament played on outdoor hard courts at the Shadow Mountain Racquet Club in Tulsa, Oklahoma in the United States that was part of the 1978 Colgate-Palmolive Grand Prix. It was the inaugural edition of the tournament was held from April 24 through April 30, 1978. Eddie Dibbs won the singles title and earned $8,500 first-prize money.

Singles
🇺🇸 Eddie Dibbs defeated 🇺🇸 Pat DuPré 6–7, 6–2, 7–5
 * It was Dibbs' 1st singles title of the year and the 14th of his career.

Doubles
🇺🇸 Van Winitsky / 🇳🇿 Russell Simpson defeated 🇧🇷 Carlos Kirmayr / 🇪🇨 Ricardo Ycaza 4–6, 7–6, 6–2