But the match will be remembered for the two red cards referee Mike Dean showed to Tony Pulis' players.
In the first half James McClean was given a straight red for a petulant retaliatory lunge at Bournemouth right-back Adam Smith.
Then Salomon Rondon was sent off in injury time for headbutting Dan Gosling.
It was Smith who gave Bournemouth the lead in the 52nd minute, cutting inside off the right hand side and firing in with his left foot.
When Gareth McAuley headed in an equaliser from a corner with 11 minutes to go it looked like Albion had rescued a point.
But then Darren Fletcher wrestled Gosling to the floor in the 87th minute and Dean - who was booed off at full-time - pointed to the spot even though contact started outside the box.
Charlie Daniels roofed the resulting penalty to win Bournemouth the game, before tempers boiled over near the end and Rondon was sent off.
The defeat ends Albion's unbeaten streak but extends Bournemouth's to five games and lifts the Cherries to within one point of the Baggies, who stay in 13th.
With both teams on the back of unbeaten runs, unsurprisingly both managers named unchanged sides.
Albion: Myhill, Dawson, Olsson, McAuley, Brunt (Lambert 74), Evans, Gardner, Fletcher (Berahino 91), Morrison (Sessegnon 45), McClean, Rondon.
Subs not used: Lindegaard, Chester, Anichebe, McManaman.
Bournemouth: Boruc, Francis (c), Cook, Gosling, Surman, Arter (Rantie), Daniels, Smith, Murray (Kermogant 76), Stanislas (Pugh 70), Ritchie.
But Glenn Murray replaced Josh King up front for the Cherries just before kick-off because King felt his hamstring in the warm-up.
Stephane Sessegnon returned from his own hamstring injury to replace Serge Gnabry on the Albion bench.
Junior Stanislas scored directly from a corner last time out, and he had the first shot of the match two minutes in, stinging goalkeeper Boaz Myhill's palms from range.
James Morrison had an early sighter a minute later, controlling a long ball before smashing a dipping volley from the corner of the box that flew a a foot wide of goalkeeper Artur Boruc's post.
But it was the Cherries who started the game brightest, with last-ditch blocks denying Murray and then Daniels.
Their movement was swift and their passing was crisp, whereas Albion's midfield looked sluggish.
The Baggies grew into the game and when Jonas Olsson won a corner attempting to nutmeg Andrew Surman, it gave the crowd something to cheer.
Ten minutes before half-time though, McClean ruined any pre-match plans Tony Pulis had put in place.
Furious that referee Mike Dean hadn't given a foul when right-back Adam Smith caught him, 10 seconds later the Irish winger sought swift retaliation, lunging into Smith on the byline.
It was a petulant Sunday league foul that Dean gave him a straight red for.
Murray fired a grass-cutter straight at Myhill before Matt Ritchie somehow put a header wide from six yards out after getting in front of Chris Brunt, but Albion managed to hold out until half-time.
Pulis brought Sessegnon on for Morrison at half-time, moved Evans to left-back and pushed Brunt into left-wing. Whatever the head coach said to his team, it worked.
Albion came flying out of the blocks despite being a man down and Rondon nearly scored four mintues into the half.
Chesting down McAuley's diagonal, the Venezuelan fired goalwards, only to see Boruc push over his effort with a sprawling save.
But, in the 52nd minute, Smith made the 10 men's job much harder.
Cutting inside off the wing, the right back ran across the box before firing a low left-footed reverse shot past Myhill inside the left-hand post.
It was Bournemouth's first attack of the half.
Incredibly, Albion looked better with ten men. Sessegnon added trickery on the right, and Rondon was working hard up front.
Stanislas hit the post from a narrow angle after beating Craig Dawson on the outside, but then the Baggies had two dangerous corners in the 73rd minute.
Olsson thought the first hit Murray's arm but replays showed it was his shoulder, and then Boruc made a brilliant close-range save from the second.
Six minutes later, Albion scored from one, McAuley rising highest to glance home a corner and send a packed Hawthorns into raptures.
But Daniels broke Albion hearts three minutes from time from 12 yards out before Dean rubbed salt into the wound, sending Rondon off at the death.

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