Houston Rockets owner Leslie Alexander will now donate $10 million to the Hurricane Harvey Relief Fund started by Houston mayor Sylvester Turner, an increase from the $4 million he pledged Monday, according to multiple reports.

According to the Houston Chronicle, Alexander has told the mayor about the increased contribution, but the team will not put out a statement on the matter because Alexander does not want the additional donation to bring attention to himself.

The Rockets had issued a statement Monday after Alexander's original donation, saying, "our hearts are heavy seeing the devastation that so many of our friends, family and neighbors are experiencing."

Later Tuesday, the NBA and NBPA announced they've jointly committed to donate $1 million to organizations "including the Hurricane Harvey Relief Fund, American Red Cross, and other non-profit groups working in the Greater Houston area to bring relief to those impacted."

The Houston Astros ownership group also agreed to donate $4 million to the relief efforts and said all revenue from tickets, concessions and parking from their relocated series against the Texas Rangers will go to hurricane relief efforts. With the series opening Tuesday night in St. Petersburg, Florida, the Rangers also pledged $1 million in hurricane relief.

Thursday's preseason game between the Houston Texans and Dallas Cowboys had been relocated, with the Cowboys playing host, but on Wednesday the NFL decided to cancel it, according to ESPN and multiple reports. The teams announced that ticket sales would be donated to the United Way of Greater Houston Relief Fund. Tickets went on sale Tuesday night and more than 40,000 had been sold -- proceeds will go to the fund.

Separately, the Texans and owner Bob McNair donated $1 million to flood relief with the NFL Foundation saying it will match the donation. Texans linebacker Brian Cushing has also donated $50,000 to help first responders helping with Harvey relief efforts.

Now classified as a tropical storm, Harvey has devastated the Houston area with flooding as a result of unprecedented rainfall totals.

Among other donations announced by teams and athletes:

The Associated Press contributed to this report.