I previewed both teams last round so you can take a look at the basics there, I am not repeating it.
West Ham lost to Arsenal but that is no shame, and they were well within the match for 60 minutes.
Brentford were excellent v Tottenham and created a lot of good scoring chances, yet they lost their 2-0 goal when Tottenham all of a sudden found their joy of play.
West Ham are 16th in the table with 20 points. The xG-data suggests that they might have deserved a few points more, but class-wise they have been midtable at best of times and coach Moyes should start worrying about his future unless they start winning matches soon.
Brentford are 10th, but we can speculate by xG-data that they might even be top-6! Definitely their over all performances have been in with Man United and Liverpool so far, and clearly better than of Chelsea and Fulham. It is also clear that not only the coach, but the whole coaching staff at Brentford is top of the league, they take care of every detail and especially set pieces are well thought of and practised.
Brentford have lost 1 in last 7, and the fixtures have not been easy! Look at the xG away at Man City... what a potential there is!

Team news tell us very little news, and both teams can field about the same lineup as on the last round if they so wish, but naturally, some weaker performers may be substituted.
Possible lineups:

本译文使用有道机器翻译,仅供参考:
我在上一轮预演了这两支球队,所以你们可以看一下基础,我不重复了。
西汉姆联输给了阿森纳,但这并不可耻,他们在60分钟的比赛中表现出色。
布伦特福德在对热刺的比赛中表现出色,创造了很多很好的得分机会,但当热刺突然发现比赛的乐趣时,他们以2-0输掉了比赛。
西汉姆联以20分排名第16位。xg的数据表明,他们可能应该多拿几分,但在最好的情况下,他们一直处于中游位置,除非他们能很快赢得比赛,否则教练莫耶斯应该开始担心他的未来了。
布伦特福德排名第十,但我们可以通过xg数据推测他们甚至可能是前六!到目前为止,他们在曼联和利物浦的表现肯定比切尔西和富勒姆的表现要好。很明显,不仅是教练,布伦特福德的整个教练组都是联盟顶级的,他们照顾每一个细节,尤其是定位球都经过了深思熟虑和练习。
布伦特福德在过去7场比赛中输了1场,赛程并不轻松!看看在曼城的xG…多么有潜力啊!
球队的消息告诉我们的消息很少,如果他们愿意,两支球队可以派出与上一轮相同的阵容,但自然地,一些表现较差的球员可能会被替换。
可能的阵容: