Signing a one year contract with the Thunder, which will see her hand her captaincy over to other Thunder star Rachael Haynes, Blackwell is set to equal the record for most seasons in first grade competition.

The record currently belongs to WA legend Lauren Ebsary, at 19 full domestic campaigns. Blackwell - widely regarded as one of the finest women's cricketers of all time - now has the chance to further etch her name into Australian cricket folklore.

"Continual improvement as a batter and team member is what I always look to achieve," Blackwell told Big Bash.

"This season I will be juggling more responsibilities away from the playing field and I'm confident this will enhance my enjoyment of playing the game."

The 35-year-old is also a director on the Cricket NSW board and a genetics councillor at a Sydney hospital.