Former Pitt F Guillermo Diaz Graham Officially Signs with New Team

One of Pitt’s outgoing transfers has made his new school choice official.

Guillermo Diaz Graham, who spent three years at Pitt, has officially signed with San Francisco, according to the Dons’ social media.

𝐎𝐟𝐟𝐢𝐜𝐢𝐚𝐥𝐥𝐲 𝐚 𝐃𝐨𝐧 🙌

Welcome to the Hilltop @guilleediazz_ !#USFDons | #WCChoops pic.twitter.com/auvCDry720

— San Francisco Men’s Basketball (@USFDonsMBB) April 29, 2025

Diaz Graham averaged 6.2 points and 5 rebounds per game this past season for Pitt. He played a career-high 23.3 minutes per game and shot 42% from the field and 42% from three-point range.

Guillermo said goodbye to Pittsburgh recently after entering the portal.

“After spending time reflecting on my future and discussing it with those closest to me, I’ve made the tough decision to enter the transfer portal and explore new opportunities,” he said online. “Over the past few years, I’ve grown in ways I never imagined on but specially off the court. Wearing the Pitt jersey was a true honor, and I’ll always take pride in having been a part of this program and culture…”

“I want to express my forever gratitude to Coach Capel, Coach O’Toole and the entire coaching staff. Thank you for always believing in me, for pushing me and demanding me to be my best every single day and specially for allowing me to be part of this Familia.”

Guillermo and his twin brother Jorge entered the transfer portal weeks ago after three years at Pitt together.

His brother Jorge committed to Oregon State recently.

Jorge Diaz Graham Commits to New School; To Play Against Twin

Jorge put out a message to the fans and those within the Pitt basketball program when he and his brother entered the portal weeks ago.

“After much reflection and conversations with my family, I’ve made the difficult decision to enter the transfer portal and pursue new challenges,” Jorge said. “These past three years at the University of Pittsburgh have been some of the most important and transformative of my life. I will always be grateful for the opportunity to wear the Pitt jersey and represent such a historic program.”