Netflix hit first, but Best Buy may have hit harder.

Toshiba’s next-generation HD DVD format received two pieces of bad news this week, when Netflix and Best Buy both said they will progress toward exclusively backing Sony’s Blu-ray format this year.

Netflix said on Feb. 11 that it would phase out HD DVD discs by the end of the year in favor of stocking Blu-ray discs. The largest U.S. movie rental-by-mail service cited Warner Home Entertainment’s decision last month to start releasing high-definition titles only in Blu-ray as a primary reason. Of the six major studios, only Universal and Paramount will continue to release HD DVD titles.

Netflix’s decision affects about 7.5 million subscribers. But its limited choice of Blu-ray titles—just 400 out of the company’s 90,000 total—may end up making its decision less important than Best Buy’s switch to Blu-ray, one analyst said.

“From a direct volume perspective, having Best Buy steer consumers to Blu-ray will have a more direct impact on the players, particularly among those who are undecided,” said Ross Rubin, director of industry analysis, consumer technology, at the NPD Group.

Best Buy, which doesn’t break out DVD player or disc sales, said Feb. 11 that it would start to “prominently showcase” Blu-ray players and discs starting next month.

“Best Buy has always believed that the customer will benefit from a widely-accepted single format that would offer advantages such as product compatibility and expanded content choices,” Best Buy President Brian Dunn said in a statement that day. “Because we believe that Blu-ray is fast emerging as that single format, we have decided to focus on Blu-ray products.”

Toshiba, which cut entry-level HD DVD prices in half last month, called Best Buy’s decision “unfortunate” and said it would “continue to study the market impact” of the two retailers’ decisions.