The Boston Celtics honored Paul Pierce by retiring his jersey after their game versus the Cleveland Cavaliers Sunday night. Houston Rockets general manager Daryl Morey acknowledged Pierce’s accomplishments having worked with him in Boston during his time with the franchise.

Morey posted a tweet as he was awaiting the jersey retirement that was held during halftime of the Cavaliers-Celtics game.

“I am excited to watch [Paul Pierce] halftime retirement ceremony. All-time great [Celtics] player, it was an honor to work with him.”

During his time with the Celtics, Morey was the team’s Senior VP of Operations, taking charge of basketball operations for the team and was one of the best front office executives in the league during his tenure.

Pierce delivered a championship to the Celtics in 2008 but was the face of the franchise throughout his career. Even during their losing seasons, he was the one constant that you could count on who would give his all night in and night out.

During his career, Pierce averaged 19.7 points, 5.6 rebounds, 3.5 assists, and 1.3 steals per game. More importantly, he made baskets regardless of how much time was left on the clock, giving the Celtics a player who could deliver in the clutch.

These days, Morey is well-known around the league as an excellent general manager for the Rockets, bringing in Chris Paul during the summer of 2017, among other notable moves he has made for the franchise. He found complementary players to All-Star and MVP candidate James Harden, who has led the team to a second-place standing this season, just one game behind the league-leading Golden State Warriors.