Tennis is certainly an enticing sport isn't it? We have two contenders. One will lose. One will win.  It can't be that difficult now can it?
We have no heavy ground to worry about, coltish two year old unwilling to enter the stalls, footballer who couldn't score in a brothel when all you really want is goals. We have mano v mano, and womano v womano of course!
But if it was as simple as this, we'd all be doing it!  I have some tennis specific manuals but all have failed to really ignite any interest, or profit over the long term One system, for instance, tells us to simply lay all players at odds of between 2 and 4 (decimals) and hey presto, we'd be making a mint!