The CBA regular season has reached its 31st round, with teams fiercely competing for playoff spots. The league's landscape has been reshuffled due to changes in the foreign player policy, leading to the rise of dark horses and the decline of traditional powerhouses. Which teams have been the most disappointing this season? Let's take a look at the list, including the reigning champions. The fifth most disappointing team this season is Guangzhou Men's Basketball Team. Over the past four seasons, they have consistently made it to the playoffs, even reaching the top eight last season. However, following the team's "rebuilding" before the start of this season, Guangzhou now looks unrecognizable, with their record plummeting. Currently, Guangzhou has a record of 7 wins and 23 losses, with a win rate of only 23%, effectively eliminating them from playoff contention early. Despite recruiting star players like Guo Ailun and Ding Yanyuhang this season, both are past their prime and cannot guarantee continuous participation, making Guangzhou a team that gains popularity but loses games. The fourth most disappointing team this season is Tianjin Men's Basketball Team. Once known as the "three-point army" and "strong team slayer," they had a strong performance last season, even defeating Guangdong three times in the regular season. Their last playoff appearance was in the 21/22 season. In recent years, Tianjin has made significant progress under Zhang Qingpeng's leadership, developing their unique style. However, this season, Tianjin has only managed 9 wins and 22 losses, with their three-point shooting percentage dropping significantly, and their weak defense being targeted by…