Celtics’ historical data points to Tatum’s usage as key to 2026-27 success
As Jaylen Brown departs, statistical trends indicate the Celtics’ win rate improves significantly when Tatum’s usage percentage exceeds 33 per cent.
Historical performance data from the Boston Celtics indicates a strong correlation between the team’s win rate and Jayson Tatum’s offensive involvement, measured by usage percentage (USG%). According to an analysis originally published by NESN and republished via Yahoo Sports, the Celtics’ success is statistically linked to Tatum’s role as the primary offensive focal point, a dynamic expected to intensify for the 2026-27 season following Jaylen Brown’s departure.
The data reveals that the team performs significantly better when Tatum’s USG% exceeds 33 per cent. In the 2022-23 season, when Tatum’s USG% was above this threshold, the Celtics achieved a 33-1 record. In contrast, when his USG% remained below 33 per cent during the same period, the team’s record dropped to 19-21. This disparity highlights the critical nature of offensive load distribution in the Celtics’ system.
Head coach Joe Mazzulla, identified in the source material as a "stat guru," utilises advanced statistics and team trends to inform decision-making. The analysis notes that Tatum’s USG% peaked at 32.7 per cent in the 2022-23 season, his highest-scoring year to date, where he averaged over 26 points per game. This statistical peak coincided with a period of heightened team success, reinforcing the link between individual offensive volume and collective wins.
The trend has been consistent across Tatum’s prime seasons from 2020-21 to 2024-25. In 2023-24, the Celtics posted an 18-3 record when Tatum’s USG% was 33 per cent or higher, compared to 39-14 when it was lower. Similarly, in 2021-22, the team recorded 26 wins with a USG% above the threshold versus 23 wins below it. The 2025-26 season was excluded from the primary trend data due to Tatum’s brief return from injury, but the historical pattern remains distinct.
With Brown leaving the roster, Tatum is projected to assume the role of sole superstar, likely increasing his offensive usage. The analysis suggests that maintaining or exceeding the 33 per cent USG% threshold will be pivotal for the Celtics’ competitiveness in the upcoming season. The data implies that the team’s win rate is not merely correlated with, but potentially dependent on, Tatum’s high-volume offensive involvement.
