From The Pavilion

My batsman with a Boundary Hitter talent hit 32 boundaries today, 4 of the first 9 boundaries were triggered by his "talent" - but none of the final 23 boundaries were caused by his trigger! Is there a logical 'match engine' reason for this?

'Boundary Hitter' turns what would otherwise have been dot balls into boundaries. ('Accumulator' works similarly.) It could be that earlier in your innings, there were more dot balls, but after a while your batter was scoring runs off almost every ball anyway so 'Boundary Hitter' couldn't trigger. Especially given he ended up with 32 boundaries - that's a decent day at the office!

Also playing a weaker opponent can see less triggers