However, as Tsao was still on the 25-man roster of his MLB team, the Colorado Rockies, at the end of the season in September, MLB regulations would not allow his release. Similar restrictions also applied to other players being sought after.
不過，受限於大聯盟工會的限制，九月球季結束時仍在洛磯隊二十五人名單之中的曹錦輝，最後仍無緣回來展現大聯盟級的身手。