Petalcorin, who vacated the WBA "interim" Light Flyweight title prior to this bout, had been heavily favoured to win the bout, though showed some notable ring rust early in the bout. Despite that rust it did seem like the Filipino deserved to have something from the round, though the referee did seem to miss a legitimate knockdown from the Filipino. The mistake from the referee may well have cost Petalcorin a 3 point swing with Kimweri being the busier man through much of the round.
By round 2 Petalcorin was starting to get into his groove and that seemed to draw out the dirtyness from Kimweri who tried to make things rough, and landed shot well after the bell to end round 3. Despite that dirty shot Kimweri did show some power in round 4, when he seemed to stagger the Filipino who had to back off for a few moments. After the 4th round the judges seemed all over the place with one one judge scoring the bout wide to Kimweri, another widely to Petalcorin whilst the third had the bout even.
It seemed, in round 6, that the Filipino was going to begin to take over and he seemed to clearly stagger Kimweri who had a nightmare 7th round. The Tanzanian was kept up by the ropes twice and although the referee didn't call either of the occasions knockdowns, they both seemed like they were legitimate knockdowns, and should have lead to Petalcorin taking a 10-7 round.
A tired looking Petalcorin seemed to give away round 8, but that gave little excuse to the judging which had Kimweri in a clear lead after 8 rounds, with the cards reading all in favour of Kimweri. Those scores seemed to force Petalcorin to action and despite a faltering round 9 he did secure some momentum in round 10, when Kimweri was deducted a point for his tactics. That momentum lead to Petalcorin hunting a KO in round's 11 and 12 and although he failed to secure the KO it did seem like he had secured a 10-8 round in round 12, until the referee again refused to issue a count.
Despite the failure to give Kimweri a count in round 12 it did seem like Petalcorin had done enough to over-turn the deficit from round 8. Amazingly however the judges failed to give Petalcorin the bout, with only one of the 3 judges viewing the Filipino as the winner, much to the shock and annoyance of Petalcorin's team, who have called for something to be done about the decision.
Sadly for Petalcorin the loss is a big one and puts him miles away from any kind of major bout, and in fact will likely force him into a rematch with Kimweri. For Kimweri the tainted win will do him no favours and their will be little clamour to see him in a major bout any time soon. It's a shame that bout really has had no winner, only losers, and it's a shame that Petalcorin's career, which has already been plagued by inactivity, has taken another his just as it seemed like he was ready to break out into genuine world title bouts.