Live basketball netted 13.4m (5.5) between 8pm and 11pm, helping ABC to lead the night by quite some distance.
Jimmy Kimmel's NBA Finals preview logged 5.2m (1.9) in the 7pm hour.
NBC's coverage of the US Open golf championship managed 9.5m (2.3) between 7pm and 10.30pm.
For CBS, 60 Minutes was the night's only original programme, securing 7.3m (1.0) at 7pm.
Meanwhile, Fox screened repeats of its roster of animated comedies, finishing above the Tiffany Network.