The hosts took the lead after a Vitaly Janelt own goal following good work from Milos Kerkez on the left, but Brentford hit back before half time, Yoane Wissa equalising from a corner.
And the visitors scored the decisive second goal with just under 20 minutes to play, Christian Norgaard smashing home after a long throw was allowed to bounce in the Bournemouth box.
The Daily Echo rates the Cherries players in defeat.
**Kepa Arrizabalaga: 5**
The Spaniard made a couple of saves but came to punch the Brentford corner and was beaten to it by Wissa for the equaliser, the keeper looking a little unconvincing in controlling his box at set pieces afterwards.
**Milos Kerkez: 7**
A decent performance from the Hungarian, a good assist for the Cherries goal showing the threat he has been going forwards of late.
_(Image: Zac Goodwin/PA Wire)_ **Dean Huijsen: 6**
The young Spaniard looked good at times, bringing the ball out of defence and crossing well on a couple of occasions.
**Illia Zabarnyi: 7**
A strong return to the XI for the Ukrainian, making a couple of crucial interventions at the back.
**Lewis Cook: 7**
Cook was good, playing at both right back and centre midfield. He was his usual solid self.
**Tyler Adams: 6**
The American was solid in midfield, breaking up the Brentford play, but was one who allowed the ball to bounce for the Brentford winner from the throw.
**Ryan Christie: 6**
Christie was his usual self in midfield, picking some excellent passes and was strong in defence, before he was replaced as he continues to manage his groin injury.
_(Image: Zac Goodwin/PA Wire)_ **Antoine Semenyo: 6**
Semenyo looked a little brighter at times, as his mini-goal drought continues. He went very close to scoring in the opening minutes of the second half, smashing the crossbar with a header, which was a good chance.
**Justin Kluivert: 6**
Kluivert looked a real threat as usual, going on some very good dribbles but often the final pass or finish was lacking.
**Marcus Tavernier: 7**
Tavernier has been hitting some good form for the Cherries, and looked good going forward, also missing a good chance as his effort curled just wide of the top corner after some good Cherries build up play.
**Evanilson: 7**
The Brazilian has been very good since returning from injury, adding some good energy up front. The striker met a good Huijsen cross and went close, and was marginally offside when he looked set to win a penalty in the second half.
**Substitutes:**
**Luis Sinisterra: 6**
**James Hill: 6**
**David Brooks: 6**
**Dango Ouattara: N/A**
**Daniel Jebbison: N/A**