Do Mayweather and Manny Steward have any history with each other?

[DoubleM]

It always seemed to me that Steward would never really give Mayweather any credit during fights and would sort of get annoying how he would potshot and never put any offensive together. Do they have any type of beef dating back?

I mean two african american fighter/trainer from the midwest and the same state of Michigan must have some history.

[adobostreak]

to quote mayweather: "it's in his blood"