I may have found the problem. I made some roster
moves prior to the last series, and when I went to
the Front Office to define their roles, the list
hadn't been updated yet. I intended to return
later, but I forgot.

According to a friend, if you leave any pitching
roles undefined, it plays havoc on the whole
system by confusing the heck out of the computer.
He has also occasionally experienced a short delay
in the Front Office being updated on roster moves.
He just exits the game and immediately returns,
and the updates are there.

So, it is my fault RamBeast sweep me, not my team's!
My team is still great, and RamBeast and his Hooter
gals are just lucky I am so stupid! LOL