This time, they've not only begun practicing for the forthcoming season, but are also adding players for on-field offensive.
The latest is that the team (owned by Salman and Sohail Khan) has got Bobby Deol on board.
It is learnt that Bobby has been roped into the team for his bowling skills.
Our source says, "Although Bobby is good with the bat too, it's his swingers that have impressed Suniel Shetty and Sohail enough to bring him to their team."
It appears that Suniel is instrumental in getting players from Bollywood to build a good team.
"Besides, the starry line-up will get a bigger audience for the tournament next month, " adds our source.
Bobby's love for the game is well known in B-Town.
"Bobby's known to indulge in the game with his friends as and when time permits.
So when he was asked to join the Mumbai Heroes, he immediately agreed, " reveals our informer.
Not surprisingly, the actor has also started practicing with his teammates at the Air-India ground in the suburbs.
"Bobby is a good bet to spearhead the bowling attack. And he can be a solid batsman to hold the middle order if the going gets tough, " said our source.