Ali moved to Worcestershire CCC for the 2007 season, and has gone on to become one of the first names on the teamsheet. During his career, he has scored eight First Class centuries.
Ali said, "When I first joined the Club many people told me what a fantastic place New Road is to play and they are right, so I am delighted to commit my long term future to the Club."
"The future for Worcestershire looks good and being a part of it excites me. I look forward to helping the Club progress back to Division One and win some trophies."
More top news
Occasional rain interspersed with drier periods. Rather warm.
Some rain tonight but largely dry.
Police are concerned for the welfare of Samantha Baldwin and her children, nine-year-old Louis Madge and six-year-old Dylan Madge