求助一个OG上正确例子的解释

OG11 P633 第四行原句
Jose Canseco is still a feared batter, most pitchers don't want to face him.

这个句子是作为正确的句子而被举例的，但两个分句之间不是应该有连接词的么？晕了

Such an usage is common in English and should not be considered as incorrect, for it is so widely used in newspapers and magazines. But such an usage is definitely not preferred in academic writing.

好吧，但是总是觉得这个句子出现在og中就很不舒服。