Tristan Thompson is stepping up to the plate in the name of brotherly love.

After the sudden death of his mother, Andrea, earlier this year, the Cleveland Cavaliers player was awarded temporary custody of his younger sibling, Amari, 17, on Wednesday (September 20), as reported by Page Six. Tristan was not present in court during the hearing, but his legal counsel spoke on his behalf via Zoom.

The athlete filed for custody earlier this month, and permanent guardianship of Amari will be determined in November.

Tristan and his brother's father, Trevor Douglas Thompson, did not contest Tristan's filing or the court's ruling. Page Six also reports that he did not receive notice of Wednesday's proceedings because his whereabouts are unknown. According to Tristan's lawyers, Trevor is not involved in Amari's life.

As Amari’s 18th birthday approaches, talks of conservatorship have been rendered since the teenager cannot take care of himself due to mental and physical medical disabilities.

On January 5, Andrea suffered cardiac arrest at her home in Toronto. Upon getting news on his mother’s condition, Tristan boarded a private jet, along with his ex, Khloé Kardashian, and flew to be with his family. After unsuccessful attempts to resuscitate her, Andrea died.

Kim Kardashian and her mom Kris Jenner also raced to Toronto in support of Tristan. Andrea’s funeral was attended by Kim, Kris, Khloé, Kylie Jenner, and  Drake.

According to the outlet, Tristan’s mom left behind $103,000 in her probate estate, that is currently not available for disbursement. When it is, the NBA player will ensure the funds go to Amari.