The NBA Finals' Game 4 preliminary television rating is the highest since 2004.

The Miami Heat's 104-98 win over the Oklahoma City Thunder on Tuesday night on ABC earned a 12.4 overnight rating. ESPN said Wednesday that was up 12 percent from last year's Heat-Mavericks series.

Ratings represent the percentage of all homes with televisions tuned into a program. Overnight ratings measure the country's largest markets.