Chemistry doesn't exist in dugouts or clubhouses.

Coach, of course we recognize your remark as being sarcastic.

I don't think anyone would deny that chemistry exists. What skeptics amongst us might suggest is that it's not entirely clear that a causal relationship can be proven to exist between clubhouse chemistry and on-field play. The cause-effect certainly seems plausible, but where's the proof?

And even if you could measure the effect, how could you measure the cause?

Further, some have argued that the perception of the cause-effect is actually bass ackwards. A team's success breeds clubhouse harmony which is then later treated as a contributing cause of that success.