[King Yao]

"do you find that college football and basketball can be much more profitable than NFL if someone puts in huge work or subscribes to good services? thinking somewhat focussing on mid-majors etc."

college football and basektball lines move a lot more than NFL and NBA lines. That tells me the opening lines are less efficient, which means there are opportunities for guys who know their college sports. There won't be as many derivative type of bets, and the limits won't be as high, but for the guy that enjoys following college sports (and has talent of course), I think it can be worthwhile. Profitability is tough to compare because of the difference in limits. The good college handicapper probably can perform at a higher ROI than the good NFL handicapper, but the good NFL handicapper may be able to make more money due to being able to bet bigger.

"do you think situational plays like NBA teams on back-to-backs or coming home after long road trip have become efficient? my guess is yes."

I don't handicap the NBA, and I rarely follow it during the regular season. When I did look into those aspects that you mentioned about 3 years ago, it did seem that the market had already adjusted for them back then. But because I don't follow it on a regular basis, if things have changed, I wouldn't know.

"in baseball, how much are you looking at pitching matchups?.. "

Pitching is 90% of the game. The other half is hitting. Aha, just kidding, a little Yogi Berraism. Seriously, pitching is crucial. The hitting lineups for the most part stay constant, with the possible exceptions of lefty/righty splits or a star player resting (Bonds on a day game after a night game for example). But the quality of the starting pitchers on the same team can vary a lot. I don't think a handicapper would go that far wrong by using power ratings in baseball to describe hitters...but he would be far off if he did that for pitchers on a team-by-team basis. Pitchers need to be separated on a pitcher-by-pitcher basis.