For Saturday July 20th I like the METS +115 vs the Phillies (Hammels vs Wheeler). Wheeler's stuff is really good and he has the potential to be an ace. However when he was first called up this season he was tipping his pitches. This problem has since been corrected and now I believe he is undervalued. This might be the last time Wheeler will ever be a home dog in his career so you should definitely be looking to scoop this value up.
For Saturday I also like the DODGERS +121 at the Nationals (Greinke vs Gonzalez). The Dodgers had a rough start to the season but they are much improved since then and I don't think the market has quite caught up. I think Harper's knee is still bothering him and taking part in the home run derby probably didn't help. Gonzalez's ERA doesn't tell the full story as I checked out his peripherals and they are just meh. I made the Dodgers +110 so I see some vale at this number.
+1.5 units season to date. All plays documented here: /pregame-forums/f/11/t/539667.aspx (1-3 unit betting system, all plays 2 units unless otherwise specified)