Well, we have a decent shot. Oakland has really yet to play a true AL contender outside of the LA Angels. All of the AL competition they've faced are all below .500, outside of the Angels, who they're 2-1 against. This series and next will test the A's, when they face decent opponents that are contending.
For some reason, I see their current record and run differential as deceptive due to the weak schedule they've had. Starting this series, the A's are going to be seriously tested, with big series against us, the Tigers, Angels, Yankees and Orioles. With the Angels closing in, the A's are going to have to hope their pitching holds up.
Just FYI, here's what the A's sked has been like so far:
(source: Baseball Reference)
W L RS RA .PCT
BOS 1 2 7 15 .333
CHW 2 1 18 8 .667
CLE 4 2 40 15 .667
HOU 5 2 48 25 .714
LAA 2 1 17 16 .667
MIN 3 0 21 8 1.000
SEA 5 5 31 33 .500
TBR 2 1 8 7 .666
TEX 3 3 32 16 .500
WSN 3 0 21 4 1.000
Beating Minnesota, Cleveland and a hurt Washington team is one thing... can they do it against potential contending teams?