The Houston Rockets will likely file an official protest in regards to the refs failing to count a James Harden dunk during their 135-133 loss to the San Antonio Spurs, league sources told Tim MacMahon of ESPN.

The Rockets were optimistic that the NBA would take action without a protest, though the team may now file a protest within the allotted 48-hour window following a game to force a ruling.

Sources also told ESPN that the league is conducting an investigation, though the resolution could take longer than 48 hours.

The play in question took place with 7 minutes and 50 seconds left in the game. The Rockets would have lead 103-89 had Harden's dunk counted.

League sources added that the Rockets will not be awarded a win.