Horford will start in Wednesday's game against the Rockets.
Horford will enter the starting lineup for the first time in 2026-27. The 40-year-old veteran started 13 times during the 2025-26 campaign, averaging 10.5 points, 4.8 rebounds, 3.7 assists and 1.4 blocks over 23.7 minutes per outing in those appearances.