Right ... OK ... normally I would say you have to pick the events you want to play, because you cannot do them all. However, in this case: both Battlegrounds and a Race are gem and time consuming team efforts. It's very difficult to do both well when they follow each other.
This is potentially very harmful for a team's cohesion. Some will want to play only one, and of course not the one the other half wants, others will want to play both, some will want to play none. SP, please space it. Battlegrounds instead of a Race, of which we already had an abundance anyway, would be perfect.